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correction of bug EDF 7972. Revealed in MEDReader. The problem happens with a field...
[modules/med.git] / src / MEDLoader / Swig / MEDLoaderTest4.py
index 203d242881b5b5b40eb1adfdcb9053b69dee421f..a0006742db63924c73e27b4a24cacc17645fec74 100644 (file)
@@ -1,10 +1,10 @@
 #  -*- coding: iso-8859-1 -*-
-# Copyright (C) 2007-2013  CEA/DEN, EDF R&D
+# Copyright (C) 2007-2014  CEA/DEN, EDF R&D
 #
 # This library is free software; you can redistribute it and/or
 # modify it under the terms of the GNU Lesser General Public
 # License as published by the Free Software Foundation; either
-# version 2.1 of the License.
+# version 2.1 of the License, or (at your option) any later version.
 #
 # This library is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -51,7 +51,9 @@ class MEDLoaderTest4(unittest.TestCase):
         m1=m.buildDescendingConnectivity()[0]
         mm=MEDFileUMesh() ; mm.setMeshes([m,m1])
         fam=DataArrayInt(9) ; fam.iota(0) ; mm.setFamilyFieldArr(0,fam)
-        fam=DataArrayInt(32) ; fam.iota(20) ; mm.setFamilyFieldArr(-1,fam)
+        fam=DataArrayInt(32) ; fam.iota(20) ; mm.setFamilyFieldArr(-1,fam) ; del fam
+        num=DataArrayInt(9) ; num.iota(100) ; mm.setRenumFieldArr(0,num)
+        num=DataArrayInt(32) ; num.iota(120) ; mm.setRenumFieldArr(-1,num) ; del num
         #
         fieldName="zeField"
         fs=MEDFileFieldMultiTS()
@@ -149,6 +151,7 @@ class MEDLoaderTest4(unittest.TestCase):
         ########## GO for reading in MEDReader, by not loading all. Mesh is fully loaded but not fields values
         ms=MEDFileMeshes(fname)
         fields=MEDFileFields(fname,False) # False is important to not read the values
+        fields.removeFieldsWithoutAnyTimeStep()
         refMem=fields.getHeapMemorySize()
         fields_per_mesh=[fields.partOfThisLyingOnSpecifiedMeshName(meshName) for meshName in ms.getMeshesNames()]
         allFMTSLeavesToDisplay=[]
@@ -177,16 +180,20 @@ class MEDLoaderTest4(unittest.TestCase):
         for i in xrange(1,5):
             self.assertTrue(fcscp.isDataSetSupportEqualToThePreviousOne(i,fields))
             pass
-        a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        ncc,a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        self.assertTrue(not ncc)
         self.assertTrue(a0.isEqual(a0Exp.changeNbOfComponents(3,0.),1e-12))
         self.assertTrue(a1.isEqual(DataArrayByte([3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,5,5,5,5,9,9,9,9,9])))
-        self.assertTrue(a2.isEqual(DataArrayInt([2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40,42,44,46,48,50,52,54,56,58,60,62,64,67,70,73,76,80,84,88,92,96])))
+        self.assertTrue(a2.isEqual(DataArrayInt([0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57,60,63,66,69,72,75,78,81,84,87,90,93,96,100,104,108,112,117,122,127,132])))
         self.assertTrue(a3.isEqual(DataArrayInt([2,0,1,2,1,2,2,2,0,2,3,4,2,4,5,2,5,3,2,6,7,2,7,8,2,8,6,2,9,10,2,10,11,2,11,9,2,12,13,2,13,14,2,14,15,2,15,12,2,16,17,2,17,18,2,18,19,2,19,16,2,20,21,2,21,22,2,22,23,2,23,20,2,24,25,2,25,26,2,26,27,2,27,24,2,28,29,2,29,30,2,30,31,2,31,28,3,0,1,2,3,3,4,5,3,6,7,8,3,9,10,11,4,12,13,14,15,4,16,17,18,19,4,20,21,22,23,4,24,25,26,27,4,28,29,30,31])))
         self.assertTrue(a4 is None)
         self.assertTrue(a5 is None)
         a6,a7=mml2.retrieveFamilyIdsOnCells()
         self.assertTrue(a6.isEqual(DataArrayInt([20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,0,1,2,3,4,5,6,7,8])))
         self.assertTrue(not a7)
+        a8,a9=mml2.retrieveNumberIdsOnCells()
+        self.assertTrue(a8.isEqual(DataArrayInt([120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,100,101,102,103,104,105,106,107,108])))
+        self.assertTrue(not a9)
         for i in xrange(5):
             fsst=MEDFileField1TSStructItem.BuildItemFrom(fields[0][i],mst)
             fields[0][i].loadArraysIfNecessary()
@@ -356,6 +363,7 @@ class MEDLoaderTest4(unittest.TestCase):
         ########## GO for reading in MEDReader, by not loading all. Mesh is fully loaded but not fields values
         ms=MEDFileMeshes(fname)
         fields=MEDFileFields(fname,False)
+        fields.removeFieldsWithoutAnyTimeStep()
         fields_per_mesh=[fields.partOfThisLyingOnSpecifiedMeshName(meshName) for meshName in ms.getMeshesNames()]
         allFMTSLeavesToDisplay=[]
         for fields in fields_per_mesh:
@@ -385,10 +393,11 @@ class MEDLoaderTest4(unittest.TestCase):
         for i in xrange(1,5):
             self.assertTrue(fcscp.isDataSetSupportEqualToThePreviousOne(i,fields))
             pass
-        a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        ncc,a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        self.assertTrue(not ncc)
         self.assertTrue(a0.isEqual(a0Exp.changeNbOfComponents(3,0.),1e-12))
         self.assertTrue(a1.isEqual(DataArrayByte([3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,5,5,5,5,9,9,9,9,9])))
-        self.assertTrue(a2.isEqual(DataArrayInt([2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40,42,44,46,48,50,52,54,56,58,60,62,64,67,70,73,76,80,84,88,92,96])))
+        self.assertTrue(a2.isEqual(DataArrayInt([0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57,60,63,66,69,72,75,78,81,84,87,90,93,96,100,104,108,112,117,122,127,132])))
         self.assertTrue(a3.isEqual(DataArrayInt([2,0,1,2,1,2,2,2,0,2,3,4,2,4,5,2,5,3,2,6,7,2,7,8,2,8,6,2,9,10,2,10,11,2,11,9,2,12,13,2,13,14,2,14,15,2,15,12,2,16,17,2,17,18,2,18,19,2,19,16,2,20,21,2,21,22,2,22,23,2,23,20,2,24,25,2,25,26,2,26,27,2,27,24,2,28,29,2,29,30,2,30,31,2,31,28,3,0,1,2,3,3,4,5,3,6,7,8,3,9,10,11,4,12,13,14,15,4,16,17,18,19,4,20,21,22,23,4,24,25,26,27,4,28,29,30,31])))
         self.assertTrue(a4 is None)
         self.assertTrue(a5 is None)
@@ -516,6 +525,7 @@ class MEDLoaderTest4(unittest.TestCase):
         ########## GO for reading in MEDReader, by not loading all. Mesh is fully loaded but not fields values
         ms=MEDFileMeshes(fname)
         fields=MEDFileFields(fname,False)
+        fields.removeFieldsWithoutAnyTimeStep()
         fields_per_mesh=[fields.partOfThisLyingOnSpecifiedMeshName(meshName) for meshName in ms.getMeshesNames()]
         allFMTSLeavesToDisplay=[]
         for fields in fields_per_mesh:
@@ -543,10 +553,11 @@ class MEDLoaderTest4(unittest.TestCase):
         for i in xrange(1,3):
             self.assertTrue(fcscp.isDataSetSupportEqualToThePreviousOne(i,fields))
             pass
-        a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        ncc,a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        self.assertTrue(not ncc)
         self.assertTrue(a0.isEqual(a0Exp.changeNbOfComponents(3,0.),1e-12))
         self.assertTrue(a1.isEqual(DataArrayByte([3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,5,5,5,5,9,9,9,9,9])))
-        self.assertTrue(a2.isEqual(DataArrayInt([2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40,42,44,46,48,50,52,54,56,58,60,62,64,67,70,73,76,80,84,88,92,96])))
+        self.assertTrue(a2.isEqual(DataArrayInt([0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57,60,63,66,69,72,75,78,81,84,87,90,93,96,100,104,108,112,117,122,127,132])))
         self.assertTrue(a3.isEqual(DataArrayInt([2,0,1,2,1,2,2,2,0,2,3,4,2,4,5,2,5,3,2,6,7,2,7,8,2,8,6,2,9,10,2,10,11,2,11,9,2,12,13,2,13,14,2,14,15,2,15,12,2,16,17,2,17,18,2,18,19,2,19,16,2,20,21,2,21,22,2,22,23,2,23,20,2,24,25,2,25,26,2,26,27,2,27,24,2,28,29,2,29,30,2,30,31,2,31,28,3,0,1,2,3,3,4,5,3,6,7,8,3,9,10,11,4,12,13,14,15,4,16,17,18,19,4,20,21,22,23,4,24,25,26,27,4,28,29,30,31])))
         assert a4 is None
         assert a5 is None
@@ -572,11 +583,12 @@ class MEDLoaderTest4(unittest.TestCase):
         for i in xrange(1,2):
             self.assertTrue(fcscp.isDataSetSupportEqualToThePreviousOne(i,fields))
             pass
-        a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        ncc,a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        self.assertTrue(not ncc)
         self.assertTrue(a0.isEqual(a0Exp.changeNbOfComponents(3,0.),1e-12))
-        self.assertTrue(a1.isEqual(DataArrayByte([5,5,5,5,9,9,9,9,9])))
-        self.assertTrue(a2.isEqual(DataArrayInt([3,6,9,12,16,20,24,28,32])))
-        self.assertTrue(a3.isEqual(DataArrayInt([3,0,1,2,3,3,4,5,3,6,7,8,3,9,10,11,4,12,13,14,15,4,16,17,18,19,4,20,21,22,23,4,24,25,26,27,4,28,29,30,31])))
+        self.assertTrue(a1.isEqual(DataArrayByte([5,5,5,5,9,9,9,9,9,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3])))
+        self.assertTrue(a2.isEqual(DataArrayInt([0,4,8,12,16,21,26,31,36,41,44,47,50,53,56,59,62,65,68,71,74,77,80,83,86,89,92,95,98,101,104,107,110,113,116,119,122,125,128,131,134])))
+        self.assertTrue(a3.isEqual(DataArrayInt([3,0,1,2,3,3,4,5,3,6,7,8,3,9,10,11,4,12,13,14,15,4,16,17,18,19,4,20,21,22,23,4,24,25,26,27,4,28,29,30,31,2,0,1,2,1,2,2,2,0,2,3,4,2,4,5,2,5,3,2,6,7,2,7,8,2,8,6,2,9,10,2,10,11,2,11,9,2,12,13,2,13,14,2,14,15,2,15,12,2,16,17,2,17,18,2,18,19,2,19,16,2,20,21,2,21,22,2,22,23,2,23,20,2,24,25,2,25,26,2,26,27,2,27,24,2,28,29,2,29,30,2,30,31,2,31,28])))
         self.assertTrue(a4 is None)
         self.assertTrue(a5 is None)
         for i in xrange(2):
@@ -764,6 +776,7 @@ class MEDLoaderTest4(unittest.TestCase):
         ########## GO for reading in MEDReader, by not loading all. Mesh is fully loaded but not fields values
         ms=MEDFileMeshes(fname)
         fields=MEDFileFields(fname,False)
+        fields.removeFieldsWithoutAnyTimeStep()
         fields_per_mesh=[fields.partOfThisLyingOnSpecifiedMeshName(meshName) for meshName in ms.getMeshesNames()]
         allFMTSLeavesToDisplay=[]
         for fields in fields_per_mesh:
@@ -793,10 +806,11 @@ class MEDLoaderTest4(unittest.TestCase):
         for i in xrange(1,5):
             self.assertTrue(fcscp.isDataSetSupportEqualToThePreviousOne(i,fields))
             pass
-        a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        ncc,a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        self.assertTrue(not ncc)
         self.assertTrue(a0.isEqual(a0Exp.changeNbOfComponents(3,0.),1e-12))
         self.assertTrue(a1.isEqual(DataArrayByte([5,5,5,5,9,9,9,9,9])))
-        self.assertTrue(a2.isEqual(DataArrayInt([3,6,9,12,16,20,24,28,32])))
+        self.assertTrue(a2.isEqual(DataArrayInt([0,4,8,12,16,21,26,31,36])))
         self.assertTrue(a3.isEqual(DataArrayInt([3,0,1,2,3,3,4,5,3,6,7,8,3,9,10,11,4,12,13,14,15,4,16,17,18,19,4,20,21,22,23,4,24,25,26,27,4,28,29,30,31])))
         self.assertTrue(a4 is None)
         self.assertTrue(a5 is None)
@@ -850,6 +864,8 @@ class MEDLoaderTest4(unittest.TestCase):
         m.insertNextCell(NORM_QUAD4,[0,5,6,1]) ; m.insertNextCell(NORM_QUAD4,[1,6,7,2]) ; m.insertNextCell(NORM_QUAD4,[5,10,11,6]) ; m.insertNextCell(NORM_QUAD4,[6,11,12,7])
         m.insertNextCell(NORM_QUAD4,[12,13,8,7])
         mm=MEDFileUMesh() ; mm.setMeshes([m])
+        fam=DataArrayInt(11) ; fam.iota(0) ; mm.setFamilyFieldArr(0,fam) ; del fam
+        num=DataArrayInt(11) ; num.iota(100) ; mm.setRenumFieldArr(0,num) ; del num
         #
         fieldName1="zeField1" ; pfl1=DataArrayInt([0,1,2,3,4,5]) ; pfl1.setName("pfl1") # on cells
         fieldName2="zeField2" ; pfl2=DataArrayInt([2,3,4,7,8,9,13,14]) ; pfl2.setName("pfl2") # on nodes
@@ -888,6 +904,7 @@ class MEDLoaderTest4(unittest.TestCase):
         ########## GO for reading in MEDReader,by not loading all. Mesh is fully loaded but not fields values
         ms=MEDFileMeshes(fname)
         fields=MEDFileFields(fname,False)
+        fields.removeFieldsWithoutAnyTimeStep()
         fields_per_mesh=[fields.partOfThisLyingOnSpecifiedMeshName(meshName) for meshName in ms.getMeshesNames()]
         allFMTSLeavesToDisplay=[]
         for fields in fields_per_mesh:
@@ -916,13 +933,20 @@ class MEDLoaderTest4(unittest.TestCase):
         for i in xrange(1,5):
             self.assertTrue((fcscp.isDataSetSupportEqualToThePreviousOne(i,fields)))
             pass
-        a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        ncc,a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        self.assertTrue(not ncc)
         self.assertTrue(a0.isEqual(a0Exp[pfl2].changeNbOfComponents(3,0.),1e-12))
         self.assertTrue(a1.isEqual(DataArrayByte([5,5,5,5,5,5])))
-        self.assertTrue(a2.isEqual(DataArrayInt([3,6,9,12,15,18])))
+        self.assertTrue(a2.isEqual(DataArrayInt([0,4,8,12,16,20])))
         self.assertTrue(a3.isEqual(DataArrayInt([3,0,3,1,3,3,4,1,3,1,4,2,3,4,5,2,3,6,5,4,3,6,7,5])))
         assert a4 is None
         assert a5 is None
+        a6,a7=mml2.retrieveFamilyIdsOnCells()
+        self.assertTrue(a6.isEqual(DataArrayInt([0,1,2,3,4,5])))
+        self.assertTrue(not a7)
+        a8,a9=mml2.retrieveNumberIdsOnCells()
+        self.assertTrue(a8.isEqual(DataArrayInt([100,101,102,103,104,105])))
+        self.assertTrue(not a9)
         for i in xrange(5):
             nbOfT=[6,8]
             fieldNames=[fieldName1,fieldName2]
@@ -946,13 +970,20 @@ class MEDLoaderTest4(unittest.TestCase):
         for i in xrange(1,5):
             self.assertTrue(fcscp.isDataSetSupportEqualToThePreviousOne(i,fields))
             pass
-        a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        ncc,a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        self.assertTrue(not ncc)
         self.assertTrue(a0.isEqual(a0Exp.changeNbOfComponents(3,0.),1e-12))
         self.assertTrue(a1.isEqual(DataArrayByte([5,5,5,5,5,5,9,9])))
-        self.assertTrue(a2.isEqual(DataArrayInt([3,6,9,12,15,18,22,26])))
+        self.assertTrue(a2.isEqual(DataArrayInt([0,4,8,12,16,20,24,29])))
         self.assertTrue(a3.isEqual(DataArrayInt([3,2,7,3,3,7,8,3,3,3,8,4,3,8,9,4,3,13,9,8,3,13,14,9,4,6,11,12,7,4,12,13,8,7])))
         self.assertTrue(a4 is None)
         self.assertTrue(a5 is None)
+        a6,a7=mml2.retrieveFamilyIdsOnCells()
+        self.assertTrue(a6.isEqual(DataArrayInt([0,1,2,3,4,5,9,10])))
+        self.assertTrue(not a7)
+        a8,a9=mml2.retrieveNumberIdsOnCells()
+        self.assertTrue(a8.isEqual(DataArrayInt([100,101,102,103,104,105,109,110])))
+        self.assertTrue(not a9)
         for i in xrange(5):
             f=allFMTSLeavesPerCommonSupport[1][0][0][i]
             fsst=MEDFileField1TSStructItem.BuildItemFrom(f,mst)
@@ -974,6 +1005,9 @@ class MEDLoaderTest4(unittest.TestCase):
         coordsY=DataArrayDouble([0,1.7,3.4]) ; coordsY.setInfoOnComponents(["YYY [km]"])
         m.setCoords(coordsX,coordsY)
         mm=MEDFileCMesh() ; mm.setMesh(m)
+        fam=DataArrayInt(8) ; fam.iota(0) ; mm.setFamilyFieldArr(0,fam) ; del fam
+        num=DataArrayInt(8) ; num.iota(100) ; mm.setRenumFieldArr(0,num) ; del num
+        num=DataArrayInt(15) ; num.iota(200) ; mm.setRenumFieldArr(1,num) ; del num
         #
         fieldName0="zeField0" ; # on cells
         fieldName1="zeField1" ; pfl1=DataArrayInt([2,3,6,7]) ; pfl1.setName("pfl1") # on cells
@@ -1032,6 +1066,7 @@ class MEDLoaderTest4(unittest.TestCase):
         ########## GO for reading in MEDReader,by not loading all. Mesh is fully loaded but not fields values
         ms=MEDFileMeshes(fname)
         fields=MEDFileFields(fname,False)
+        fields.removeFieldsWithoutAnyTimeStep()
         fields_per_mesh=[fields.partOfThisLyingOnSpecifiedMeshName(meshName) for meshName in ms.getMeshesNames()]
         allFMTSLeavesToDisplay=[]
         for fields in fields_per_mesh:
@@ -1057,13 +1092,23 @@ class MEDLoaderTest4(unittest.TestCase):
         fcscp=allFMTSLeavesPerCommonSupport[0][1]
         mml=fcscp.buildFromScratchDataSetSupport(0,fields)
         mml2=mml.prepare()
-        a,b=mml2.buildVTUArrays()
+        (a,b),c=mml2.buildVTUArrays()
+        self.assertTrue(c)# c is True here because the returned array is directly those coming from internal structure
         self.assertTrue(a.isEqual(coordsX,1e-12))
         self.assertTrue(b.isEqual(coordsY,1e-12))
         self.assertTrue(isinstance(mml2,MEDCMeshMultiLev))
         for i in xrange(1,5):
             self.assertTrue((fcscp.isDataSetSupportEqualToThePreviousOne(i,fields)))
             pass
+        a6,a7=mml2.retrieveFamilyIdsOnCells()
+        self.assertTrue(a6.isEqual(DataArrayInt([0,1,2,3,4,5,6,7])))
+        self.assertTrue(a7) # True because no copy
+        a8,a9=mml2.retrieveNumberIdsOnCells()
+        self.assertTrue(a8.isEqual(DataArrayInt([100,101,102,103,104,105,106,107])))
+        self.assertTrue(a9) # True because no copy
+        a10,a11=mml2.retrieveNumberIdsOnNodes()
+        self.assertTrue(a10.isEqual(DataArrayInt([200,201,202,203,204,205,206,207,208,209,210,211,212,213,214])))
+        self.assertTrue(a11) # True because no copy
         for i in xrange(5):
             f=allFMTSLeavesPerCommonSupport[0][0][0][i]
             fsst=MEDFileField1TSStructItem.BuildItemFrom(f,mst)
@@ -1088,9 +1133,19 @@ class MEDLoaderTest4(unittest.TestCase):
         mml=fcscp.buildFromScratchDataSetSupport(0,fields)
         mml2=mml.prepare()
         self.assertTrue(isinstance(mml2,MEDCMeshMultiLev)) # here the 2nd support is a part of CMesh that is also a CMesh -> CMesh not a UMesh
-        a,b=mml2.buildVTUArrays()
+        (a,b),c=mml2.buildVTUArrays()
+        self.assertTrue(not c)# c is False because this a sub support specialy built for buildVTUArrays
         self.assertTrue(a.isEqual(coordsX[[2,3,4]],1e-12))
         self.assertTrue(b.isEqual(coordsY,1e-12))
+        a6,a7=mml2.retrieveFamilyIdsOnCells()
+        self.assertTrue(a6.isEqual(DataArrayInt([2,3,6,7])))
+        self.assertTrue(not a7) # False because copy
+        a8,a9=mml2.retrieveNumberIdsOnCells()
+        self.assertTrue(a8.isEqual(DataArrayInt([102,103,106,107])))
+        self.assertTrue(not a9) # False because copy
+        a10,a11=mml2.retrieveNumberIdsOnNodes()
+        self.assertTrue(a10.isEqual(DataArrayInt([202,203,204,207,208,209,212,213,214])))
+        self.assertTrue(not a11) # False because copy
         for i in xrange(1,5):
             self.assertTrue((fcscp.isDataSetSupportEqualToThePreviousOne(i,fields)))
             pass
@@ -1118,15 +1173,22 @@ class MEDLoaderTest4(unittest.TestCase):
         mml=fcscp.buildFromScratchDataSetSupport(0,fields)
         mml2=mml.prepare()
         self.assertTrue(isinstance(mml2,MEDUMeshMultiLev)) # here the 3rd support is a part of CMesh but impossible to simplify more than a UMesh
-        a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        ncc,a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        self.assertTrue(not ncc)
         a0Exp=DataArrayDouble([0.,0.,1.1,0.,2.2,0.,3.3,0.,4.4,0.,0.,1.7,1.1,1.7,2.2,1.7,3.3,1.7,4.4,1.7,0.,3.4,1.1,3.4,2.2,3.4,3.3,3.4,4.4,3.4],15,2)
         a0Exp.setInfoOnComponents(["XX [m]","YYY [km]"])
         self.assertTrue(a0.isEqual(a0Exp.changeNbOfComponents(3,0.),1e-12))
         self.assertTrue(a1.isEqual(DataArrayByte([9,9,9,9])))
-        self.assertTrue(a2.isEqual(DataArrayInt([4,8,12,16])))
+        self.assertTrue(a2.isEqual(DataArrayInt([0,5,10,15])))
         self.assertTrue(a3.isEqual(DataArrayInt([4,3,2,7,8,4,4,3,8,9,4,7,6,11,12,4,9,8,13,14])))
         self.assertTrue(a4 is None)
         self.assertTrue(a5 is None)
+        a6,a7=mml2.retrieveFamilyIdsOnCells()
+        self.assertTrue(a6.isEqual(DataArrayInt([2,3,5,7])))
+        self.assertTrue(not a7) # False because copy
+        a8,a9=mml2.retrieveNumberIdsOnCells()
+        self.assertTrue(a8.isEqual(DataArrayInt([102,103,105,107])))
+        self.assertTrue(not a9) # False because copy
         for i in xrange(5):
             f=allFMTSLeavesPerCommonSupport[2][0][0][i]
             fsst=MEDFileField1TSStructItem.BuildItemFrom(f,mst)
@@ -1149,6 +1211,8 @@ class MEDLoaderTest4(unittest.TestCase):
         a0Exp.setInfoOnComponents(["XX [m]","YYY [km]"])
         m.setCoords(a0Exp)
         mm=MEDFileCurveLinearMesh() ; mm.setMesh(m)
+        fam=DataArrayInt(8) ; fam.iota(0) ; mm.setFamilyFieldArr(0,fam) ; del fam
+        num=DataArrayInt(8) ; num.iota(100) ; mm.setRenumFieldArr(0,num) ; del num
         #
         fieldName0="zeField0" ; # on cells
         fieldName1="zeField1" ; pfl1=DataArrayInt([2,3,6,7]) ; pfl1.setName("pfl1") # on cells
@@ -1207,6 +1271,7 @@ class MEDLoaderTest4(unittest.TestCase):
         ########## GO for reading in MEDReader,by not loading all. Mesh is fully loaded but not fields values
         ms=MEDFileMeshes(fname)
         fields=MEDFileFields(fname,False)
+        fields.removeFieldsWithoutAnyTimeStep()
         fields_per_mesh=[fields.partOfThisLyingOnSpecifiedMeshName(meshName) for meshName in ms.getMeshesNames()]
         allFMTSLeavesToDisplay=[]
         for fields in fields_per_mesh:
@@ -1233,9 +1298,16 @@ class MEDLoaderTest4(unittest.TestCase):
         mml=fcscp.buildFromScratchDataSetSupport(0,fields)
         mml2=mml.prepare()
         self.assertTrue(isinstance(mml2,MEDCurveLinearMeshMultiLev))
-        a,b=mml2.buildVTUArrays()
+        a,b,c=mml2.buildVTUArrays()
+        self.assertTrue(c)#True here because a is directly coming from internal data without copy
         self.assertTrue(a.isEqual(a0Exp,1e-12))
         self.assertEqual(b,[5,3])
+        a6,a7=mml2.retrieveFamilyIdsOnCells()
+        self.assertTrue(a6.isEqual(DataArrayInt([0,1,2,3,4,5,6,7])))
+        self.assertTrue(a7) # True because no copy
+        a8,a9=mml2.retrieveNumberIdsOnCells()
+        self.assertTrue(a8.isEqual(DataArrayInt([100,101,102,103,104,105,106,107])))
+        self.assertTrue(a9) # True because no copy
         for i in xrange(1,5):
             self.assertTrue((fcscp.isDataSetSupportEqualToThePreviousOne(i,fields)))
             pass
@@ -1263,9 +1335,16 @@ class MEDLoaderTest4(unittest.TestCase):
         mml=fcscp.buildFromScratchDataSetSupport(0,fields)
         mml2=mml.prepare()
         self.assertTrue(isinstance(mml2,MEDCurveLinearMeshMultiLev)) # here the 2nd support is a part of CMesh that is also a CMesh -> CMesh not a UMesh
-        a,b=mml2.buildVTUArrays()
+        a,b,c=mml2.buildVTUArrays()
+        self.assertTrue(not c)#False here because a is the result of a computation not the internal strucutre
         self.assertTrue(a.isEqual(a0Exp[pfl2],1e-12))
         self.assertEqual(b,[3,3])
+        a6,a7=mml2.retrieveFamilyIdsOnCells()
+        self.assertTrue(a6.isEqual(DataArrayInt([2,3,6,7])))
+        self.assertTrue(not a7) # False because copy
+        a8,a9=mml2.retrieveNumberIdsOnCells()
+        self.assertTrue(a8.isEqual(DataArrayInt([102,103,106,107])))
+        self.assertTrue(not a9) # False because copy
         for i in xrange(1,5):
             self.assertTrue((fcscp.isDataSetSupportEqualToThePreviousOne(i,fields)))
             pass
@@ -1293,15 +1372,22 @@ class MEDLoaderTest4(unittest.TestCase):
         mml=fcscp.buildFromScratchDataSetSupport(0,fields)
         mml2=mml.prepare()
         self.assertTrue(isinstance(mml2,MEDUMeshMultiLev)) # here the 3rd support is a part of CMesh but impossible to simplify more than a UMesh
-        a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        ncc,a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        self.assertTrue(not ncc)
         a0Exp=DataArrayDouble([0.,0.,1.1,0.,2.2,0.,3.3,0.,4.4,0.,0.,1.7,1.1,1.7,2.2,1.7,3.3,1.7,4.4,1.7,0.,3.4,1.1,3.4,2.2,3.4,3.3,3.4,4.4,3.4],15,2)
         a0Exp.setInfoOnComponents(["XX [m]","YYY [km]"])
         self.assertTrue(a0.isEqual(a0Exp.changeNbOfComponents(3,0.),1e-12))
         self.assertTrue(a1.isEqual(DataArrayByte([9,9,9,9])))
-        self.assertTrue(a2.isEqual(DataArrayInt([4,8,12,16])))
+        self.assertTrue(a2.isEqual(DataArrayInt([0,5,10,15])))
         self.assertTrue(a3.isEqual(DataArrayInt([4,3,2,7,8,4,4,3,8,9,4,7,6,11,12,4,9,8,13,14])))
         self.assertTrue(a4 is None)
         self.assertTrue(a5 is None)
+        a6,a7=mml2.retrieveFamilyIdsOnCells()
+        self.assertTrue(a6.isEqual(DataArrayInt([2,3,5,7])))
+        self.assertTrue(not a7) # False because copy
+        a8,a9=mml2.retrieveNumberIdsOnCells()
+        self.assertTrue(a8.isEqual(DataArrayInt([102,103,105,107])))
+        self.assertTrue(not a9) # False because copy
         for i in xrange(5):
             f=allFMTSLeavesPerCommonSupport[2][0][0][i]
             fsst=MEDFileField1TSStructItem.BuildItemFrom(f,mst)
@@ -1356,8 +1442,8 @@ class MEDLoaderTest4(unittest.TestCase):
             fNode.setName(fieldName2) ; fNode.setMesh(m)
             fNode.setGaussLocalizationOnCells([0,1,2,3],[0.,0.,1.,0.,0.,1.],[0.5,0.5,0.7,0.7],[0.8,0.2])
             fNode.setGaussLocalizationOnCells([4,5],[0.,0.,1.,0.,0.,1.],[0.5,0.5,0.7,0.7,0.1,0.1,0.2,0.2,0.3,0.3],[0.8,0.05,0.1,0.04,0.01])
-            fNode.setGaussLocalizationOnCells([6,7,8],[0.,0.,1.,0.,1.,1.,0.,1.],[0.5,0.5,0.7,0.7,0.1,0.1,0.2,0.2],[0.8,0.05,0.1,0.04])
-            fNode.setGaussLocalizationOnCells([9,10],[0.,0.,1.,0.,1.,1.,0.,1.],[0.5,0.5,0.7,0.7,0.1,0.1,0.2,0.2,0.3,0.3,0.4,0.4,0.8,0.8],[0.8,0.05,0.1,0.01,0.02,0.005,0.005])
+            fNode.setGaussLocalizationOnCells([6,7,8],[-1.,-1.,1.,-1.,1.,1.,-1.,1.],[0.5,0.5,0.7,0.7,0.1,0.1,0.2,0.2],[0.8,0.05,0.1,0.04])
+            fNode.setGaussLocalizationOnCells([9,10],[-1.,-1.,1.,-1.,1.,1.,-1.,1.],[0.5,0.5,0.7,0.7,0.1,0.1,0.2,0.2,0.3,0.3,0.4,0.4,0.8,0.8],[0.8,0.05,0.1,0.01,0.02,0.005,0.005])
             arr=DataArrayDouble(2*(4*2+2*5+3*4+2*7)) ; arr.iota(300+1000*i) ; arr.rearrange(2)
             fNode.setArray(arr) ; arr.setInfoOnComponents(["Comp1_2 [m]","Com2_2 [s^2]"]) ; fNode.checkCoherency()
             f.setFieldNoProfileSBT(fNode)
@@ -1380,6 +1466,7 @@ class MEDLoaderTest4(unittest.TestCase):
         ########## GO for reading in MEDReader,by not loading all. Mesh is fully loaded but not fields values
         ms=MEDFileMeshes(fname)
         fields=MEDFileFields(fname,False)
+        fields.removeFieldsWithoutAnyTimeStep()
         fields_per_mesh=[fields.partOfThisLyingOnSpecifiedMeshName(meshName) for meshName in ms.getMeshesNames()]
         allFMTSLeavesToDisplay=[]
         for fields in fields_per_mesh:
@@ -1404,10 +1491,11 @@ class MEDLoaderTest4(unittest.TestCase):
         mml=fcscp.buildFromScratchDataSetSupport(0,fields)
         mml2=mml.prepare()
         self.assertTrue(isinstance(mml2,MEDUMeshMultiLev))
-        a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        ncc,a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        self.assertTrue(not ncc)
         self.assertTrue(a0.isEqual(a0Exp.changeNbOfComponents(3,0.),1e-12))
         self.assertTrue(a1.isEqual(DataArrayByte([5,5,5,5,5,5,9,9,9,9,9])))
-        self.assertTrue(a2.isEqual(DataArrayInt([3,6,9,12,15,18,22,26,30,34,38])))
+        self.assertTrue(a2.isEqual(DataArrayInt([0,4,8,12,16,20,24,29,34,39,44])))
         self.assertTrue(a3.isEqual(DataArrayInt([3,2,7,3,3,7,8,3,3,3,8,4,3,8,9,4,3,13,9,8,3,13,14,9,4,0,5,6,1,4,1,6,7,2,4,5,10,11,6,4,6,11,12,7,4,12,13,8,7])))
         self.assertTrue(a4 is None)
         self.assertTrue(a5 is None)
@@ -1498,8 +1586,8 @@ class MEDLoaderTest4(unittest.TestCase):
             fNode.setName(fieldName2) ; fNode.setMesh(m[pfl1])
             fNode.setGaussLocalizationOnCells([0],[0.,0.,1.,0.,0.,1.],[0.5,0.5,0.7,0.7],[0.8,0.2])
             fNode.setGaussLocalizationOnCells([1],[0.,0.,1.,0.,0.,1.],[0.5,0.5,0.7,0.7,0.1,0.1,0.2,0.2,0.3,0.3],[0.8,0.05,0.1,0.04,0.01])
-            fNode.setGaussLocalizationOnCells([2,3],[0.,0.,1.,0.,1.,1.,0.,1.],[0.5,0.5,0.7,0.7,0.1,0.1,0.2,0.2],[0.8,0.05,0.1,0.04])
-            fNode.setGaussLocalizationOnCells([4],[0.,0.,1.,0.,1.,1.,0.,1.],[0.5,0.5,0.7,0.7,0.1,0.1,0.2,0.2,0.3,0.3,0.4,0.4,0.8,0.8],[0.8,0.05,0.1,0.01,0.02,0.005,0.005])
+            fNode.setGaussLocalizationOnCells([2,3],[-1.,-1.,1.,-1.,1.,1.,-1.,1.],[0.5,0.5,0.7,0.7,0.1,0.1,0.2,0.2],[0.8,0.05,0.1,0.04])
+            fNode.setGaussLocalizationOnCells([4],[-1.,-1.,1.,-1.,1.,1.,-1.,1.],[0.5,0.5,0.7,0.7,0.1,0.1,0.2,0.2,0.3,0.3,0.4,0.4,0.8,0.8],[0.8,0.05,0.1,0.01,0.02,0.005,0.005])
             arr=DataArrayDouble(2*(2*1+5*1+4*2+7*1)) ; arr.iota(300+1000*i) ; arr.rearrange(2)
             fNode.setArray(arr) ; arr.setInfoOnComponents(["Comp1_2 [m]","Com2_2 [s^2]"]) ; fNode.checkCoherency()
             f.setFieldProfile(fNode,mm,0,pfl1)
@@ -1522,6 +1610,7 @@ class MEDLoaderTest4(unittest.TestCase):
         ########## GO for reading in MEDReader,by not loading all. Mesh is fully loaded but not fields values
         ms=MEDFileMeshes(fname)
         fields=MEDFileFields(fname,False)
+        fields.removeFieldsWithoutAnyTimeStep()
         fields_per_mesh=[fields.partOfThisLyingOnSpecifiedMeshName(meshName) for meshName in ms.getMeshesNames()]
         allFMTSLeavesToDisplay=[]
         for fields in fields_per_mesh:
@@ -1546,10 +1635,11 @@ class MEDLoaderTest4(unittest.TestCase):
         mml=fcscp.buildFromScratchDataSetSupport(0,fields)
         mml2=mml.prepare()
         self.assertTrue(isinstance(mml2,MEDUMeshMultiLev))
-        a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        ncc,a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        self.assertTrue(not ncc)
         self.assertTrue(a0.isEqual(a0Exp[pfl2].changeNbOfComponents(3,0.),1e-12))
         self.assertTrue(a1.isEqual(DataArrayByte([5,5,9,9,9])))
-        self.assertTrue(a2.isEqual(DataArrayInt([3,6,10,14,18])))
+        self.assertTrue(a2.isEqual(DataArrayInt([0,4,8,13,18])))
         self.assertTrue(a3.isEqual(DataArrayInt([3,1,4,2,3,4,5,2,4,0,3,4,1,4,3,6,7,4,4,7,8,5,4])))
         self.assertTrue(a4 is None)
         self.assertTrue(a5 is None)
@@ -1649,6 +1739,7 @@ class MEDLoaderTest4(unittest.TestCase):
         ########## GO for reading in MEDReader,by not loading all. Mesh is fully loaded but not fields values
         ms=MEDFileMeshes(fname)
         fields=MEDFileFields(fname,False)
+        fields.removeFieldsWithoutAnyTimeStep()
         fields_per_mesh=[fields.partOfThisLyingOnSpecifiedMeshName(meshName) for meshName in ms.getMeshesNames()]
         allFMTSLeavesToDisplay=[]
         for fields in fields_per_mesh:
@@ -1673,10 +1764,11 @@ class MEDLoaderTest4(unittest.TestCase):
         mml=fcscp.buildFromScratchDataSetSupport(0,fields)
         mml2=mml.prepare()
         self.assertTrue(isinstance(mml2,MEDUMeshMultiLev))
-        a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        ncc,a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        self.assertTrue(not ncc)
         self.assertTrue(a0.isEqual(a0Exp[pfl1].changeNbOfComponents(3,0.),1e-12))
         self.assertTrue(a1.isEqual(DataArrayByte([5,5,9,9,9])))
-        self.assertTrue(a2.isEqual(DataArrayInt([3,6,10,14,18])))
+        self.assertTrue(a2.isEqual(DataArrayInt([0,4,8,13,18])))
         self.assertTrue(a3.isEqual(DataArrayInt([3,1,4,2,3,4,5,2,4,0,3,4,1,4,3,6,7,4,4,7,8,5,4])))
         self.assertTrue(a4 is None)
         self.assertTrue(a5 is None)
@@ -1730,10 +1822,10 @@ class MEDLoaderTest4(unittest.TestCase):
             f=MEDFileField1TS()
             fNode=MEDCouplingFieldDouble(ON_GAUSS_PT) ; fNode.setTime(float(i),i,0)
             fNode.setName(fieldName0) ; fNode.setMesh(m)
-            fNode.setGaussLocalizationOnCells([0,2,3,4,7,15],[0.,0.,1.,0.,1.,1.,0.,1.],[0.5,0.5,0.7,0.7],[0.8,0.2])
-            fNode.setGaussLocalizationOnCells([1,5,8,9],[0.,0.,1.,0.,1.,1.,0.,1.],[0.5,0.5,0.7,0.7,0.1,0.1,0.2,0.2,0.3,0.3],[0.8,0.05,0.1,0.04,0.01])
-            fNode.setGaussLocalizationOnCells([6,10,13],[0.,0.,1.,0.,1.,1.,0.,1.],[0.5,0.5,0.7,0.7,0.1,0.1,0.2,0.2],[0.8,0.05,0.1,0.04])
-            fNode.setGaussLocalizationOnCells([11,12,14],[0.,0.,1.,0.,1.,1.,0.,1.],[0.5,0.5,0.7,0.7,0.1,0.1,0.2,0.2,0.3,0.3,0.4,0.4,0.8,0.8],[0.8,0.05,0.1,0.01,0.02,0.005,0.005])
+            fNode.setGaussLocalizationOnCells([0,2,3,4,7,15],[-1.,-1.,1.,-1.,1.,1.,-1.,1.],[0.5,0.5,0.7,0.7],[0.8,0.2])
+            fNode.setGaussLocalizationOnCells([1,5,8,9],[-1.,-1.,1.,-1.,1.,1.,-1.,1.],[0.5,0.5,0.7,0.7,0.1,0.1,0.2,0.2,0.3,0.3],[0.8,0.05,0.1,0.04,0.01])
+            fNode.setGaussLocalizationOnCells([6,10,13],[-1.,-1.,1.,-1.,1.,1.,-1.,1.],[0.5,0.5,0.7,0.7,0.1,0.1,0.2,0.2],[0.8,0.05,0.1,0.04])
+            fNode.setGaussLocalizationOnCells([11,12,14],[-1.,-1.,1.,-1.,1.,1.,-1.,1.],[0.5,0.5,0.7,0.7,0.1,0.1,0.2,0.2,0.3,0.3,0.4,0.4,0.8,0.8],[0.8,0.05,0.1,0.01,0.02,0.005,0.005])
             arr=DataArrayDouble(2*(2*6+5*4+4*3+7*3)) ; arr.iota(0+1000*i) ; arr.rearrange(2)
             fNode.setArray(arr) ; arr.setInfoOnComponents(["Comp1_0 [m]","Com2_0 [s^2]"]) ; fNode.checkCoherency()
             f.setFieldNoProfileSBT(fNode)
@@ -1746,6 +1838,7 @@ class MEDLoaderTest4(unittest.TestCase):
         ########## GO for reading in MEDReader,by not loading all. Mesh is fully loaded but not fields values
         ms=MEDFileMeshes(fname)
         fields=MEDFileFields(fname,False)
+        fields.removeFieldsWithoutAnyTimeStep()
         fields_per_mesh=[fields.partOfThisLyingOnSpecifiedMeshName(meshName) for meshName in ms.getMeshesNames()]
         allFMTSLeavesToDisplay=[]
         for fields in fields_per_mesh:
@@ -1770,10 +1863,11 @@ class MEDLoaderTest4(unittest.TestCase):
         mml=fcscp.buildFromScratchDataSetSupport(0,fields)
         mml2=mml.prepare()
         self.assertTrue(isinstance(mml2,MEDUMeshMultiLev))
-        a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        ncc,a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        self.assertTrue(not ncc)
         self.assertTrue(a0.isEqual(a0Exp.changeNbOfComponents(3,0.),1e-12))
         self.assertTrue(a1.isEqual(DataArrayByte([9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9])))
-        self.assertTrue(a2.isEqual(DataArrayInt([4,8,12,16,20,24,28,32,36,40,44,48,52,56,60,64])))
+        self.assertTrue(a2.isEqual(DataArrayInt([0,5,10,15,20,25,30,35,40,45,50,55,60,65,70,75])))
         self.assertTrue(a3.isEqual(DataArrayInt([4,1,0,5,6,4,3,2,7,8,4,4,3,8,9,4,6,5,10,11,4,9,8,13,14,4,19,18,23,24,4,2,1,6,7,4,7,6,11,12,4,11,10,15,16,4,12,11,16,17,4,8,7,12,13,4,13,12,17,18,4,17,16,21,22,4,14,13,18,19,4,16,15,20,21,4,18,17,22,23]))) # <- here the mesh is renumbered : the mesh is equal to m[[0,2,3,4,7,15, 1,5,8,9, 6,10,13, 11,12,14]]
         self.assertTrue(a4 is None)
         self.assertTrue(a5 is None)
@@ -1811,10 +1905,10 @@ class MEDLoaderTest4(unittest.TestCase):
             f=MEDFileField1TS()
             fNode=MEDCouplingFieldDouble(ON_GAUSS_PT) ; fNode.setTime(float(i),i,0)
             fNode.setName(fieldName0) ; fNode.setMesh(m)
-            fNode.setGaussLocalizationOnCells([0,2,3,4,7,15],[0.,0.,1.,0.,1.,1.,0.,1.],[0.5,0.5,0.7,0.7],[0.8,0.2])
-            fNode.setGaussLocalizationOnCells([1,5,8,9],[0.,0.,1.,0.,1.,1.,0.,1.],[0.5,0.5,0.7,0.7,0.1,0.1,0.2,0.2,0.3,0.3],[0.8,0.05,0.1,0.04,0.01])
-            fNode.setGaussLocalizationOnCells([6,10,13],[0.,0.,1.,0.,1.,1.,0.,1.],[0.5,0.5,0.7,0.7,0.1,0.1,0.2,0.2],[0.8,0.05,0.1,0.04])
-            fNode.setGaussLocalizationOnCells([11,12,14],[0.,0.,1.,0.,1.,1.,0.,1.],[0.5,0.5,0.7,0.7,0.1,0.1,0.2,0.2,0.3,0.3,0.4,0.4,0.8,0.8],[0.8,0.05,0.1,0.01,0.02,0.005,0.005])
+            fNode.setGaussLocalizationOnCells([0,2,3,4,7,15],[-1.,-1.,1.,-1.,1.,1.,-1.,1.],[0.5,0.5,0.7,0.7],[0.8,0.2])
+            fNode.setGaussLocalizationOnCells([1,5,8,9],[-1.,-1.,1.,-1.,1.,1.,-1.,1.],[0.5,0.5,0.7,0.7,0.1,0.1,0.2,0.2,0.3,0.3],[0.8,0.05,0.1,0.04,0.01])
+            fNode.setGaussLocalizationOnCells([6,10,13],[-1.,-1.,1.,-1.,1.,1.,-1.,1.],[0.5,0.5,0.7,0.7,0.1,0.1,0.2,0.2],[0.8,0.05,0.1,0.04])
+            fNode.setGaussLocalizationOnCells([11,12,14],[-1.,-1.,1.,-1.,1.,1.,-1.,1.],[0.5,0.5,0.7,0.7,0.1,0.1,0.2,0.2,0.3,0.3,0.4,0.4,0.8,0.8],[0.8,0.05,0.1,0.01,0.02,0.005,0.005])
             arr=DataArrayDouble(2*(2*6+5*4+4*3+7*3)) ; arr.iota(0+1000*i) ; arr.rearrange(2)
             fNode.setArray(arr) ; arr.setInfoOnComponents(["Comp1_0 [m]","Com2_0 [s^2]"]) ; fNode.checkCoherency()
             f.setFieldNoProfileSBT(fNode)
@@ -1835,6 +1929,7 @@ class MEDLoaderTest4(unittest.TestCase):
         ########## GO for reading in MEDReader,by not loading all. Mesh is fully loaded but not fields values
         ms=MEDFileMeshes(fname)
         fields=MEDFileFields(fname,False)
+        fields.removeFieldsWithoutAnyTimeStep()
         fields_per_mesh=[fields.partOfThisLyingOnSpecifiedMeshName(meshName) for meshName in ms.getMeshesNames()]
         allFMTSLeavesToDisplay=[]
         for fields in fields_per_mesh:
@@ -1859,10 +1954,11 @@ class MEDLoaderTest4(unittest.TestCase):
         mml=fcscp.buildFromScratchDataSetSupport(0,fields)
         mml2=mml.prepare()
         self.assertTrue(isinstance(mml2,MEDUMeshMultiLev))
-        a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        ncc,a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        self.assertTrue(not ncc)
         self.assertTrue(a0.isEqual(a0Exp.changeNbOfComponents(3,0.),1e-12))
         self.assertTrue(a1.isEqual(DataArrayByte([9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9])))
-        self.assertTrue(a2.isEqual(DataArrayInt([4,8,12,16,20,24,28,32,36,40,44,48,52,56,60,64])))
+        self.assertTrue(a2.isEqual(DataArrayInt([0,5,10,15,20,25,30,35,40,45,50,55,60,65,70,75])))
         self.assertTrue(a3.isEqual(DataArrayInt([4,1,0,5,6,4,2,1,6,7,4,3,2,7,8,4,4,3,8,9,4,6,5,10,11,4,7,6,11,12,4,8,7,12,13,4,9,8,13,14,4,11,10,15,16,4,12,11,16,17,4,13,12,17,18,4,14,13,18,19,4,16,15,20,21,4,17,16,21,22,4,18,17,22,23,4,19,18,23,24]))) # <- here the mesh is NOT renumbered : the mesh is equal to m
         self.assertTrue(a4 is None)
         self.assertTrue(a5 is None)
@@ -1946,6 +2042,7 @@ class MEDLoaderTest4(unittest.TestCase):
             ########## GO for reading in MEDReader,by not loading all. Mesh is fully loaded but not fields values
             ms=MEDFileMeshes(fname)
             fields=MEDFileFields(fname,False)
+            fields.removeFieldsWithoutAnyTimeStep()
             fields_per_mesh=[fields.partOfThisLyingOnSpecifiedMeshName(meshName) for meshName in ms.getMeshesNames()]
             allFMTSLeavesToDisplay=[]
             for fields in fields_per_mesh:
@@ -1972,10 +2069,11 @@ class MEDLoaderTest4(unittest.TestCase):
             mml=fcscp.buildFromScratchDataSetSupport(0,fields)
             mml2=mml.prepare()
             self.assertTrue(isinstance(mml2,MEDUMeshMultiLev))
-            a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+            ncc,a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+            self.assertTrue(ncc)
             self.assertTrue(a0.isEqual(a0Exp,1e-12))
             self.assertTrue(a1.isEqual(DataArrayByte([12,12,42,42,42])))
-            self.assertTrue(a2.isEqual(DataArrayInt([8,16,24,32,40])))
+            self.assertTrue(a2.isEqual(DataArrayInt([0,9,18,27,36])))
             self.assertTrue(a3.isEqual(DataArrayInt([8,1,0,6,7,13,12,18,19,8,2,1,7,8,14,13,19,20,8,2,3,8,9,14,15,20,21,8,3,4,9,10,15,16,21,22,8,4,5,10,11,16,17,22,23])))
             self.assertTrue(a4.isEqual(DataArrayInt([-1,-1,0,31,62])))
             self.assertTrue(a5.isEqual(DataArrayInt([6,4,3,2,8,9,4,15,21,20,14,4,3,15,14,2,4,2,14,20,8,4,8,20,21,9,4,9,21,15,3,6,4,4,3,9,10,4,16,22,21,15,4,4,16,15,3,4,3,15,21,9,4,9,21,22,10,4,10,22,16,4,6,4,5,4,10,11,4,17,23,22,16,4,5,17,16,4,4,4,16,22,10,4,10,22,23,11,4,11,23,17,5])))
@@ -2007,10 +2105,11 @@ class MEDLoaderTest4(unittest.TestCase):
             mml=fcscp.buildFromScratchDataSetSupport(0,fields)
             mml2=mml.prepare()
             self.assertTrue(isinstance(mml2,MEDUMeshMultiLev))
-            a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+            ncc,a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+            self.assertTrue(ncc)
             self.assertTrue(a0.isEqual(a0Exp,1e-12))
             self.assertTrue(a1.isEqual(DataArrayByte([42,42])))
-            self.assertTrue(a2.isEqual(DataArrayInt([8,16])))
+            self.assertTrue(a2.isEqual(DataArrayInt([0,9])))
             self.assertTrue(a3.isEqual(DataArrayInt([8,2,3,8,9,14,15,20,21,8,3,4,9,10,15,16,21,22])))
             self.assertTrue(a4.isEqual(DataArrayInt([0,31])))
             self.assertTrue(a5.isEqual(DataArrayInt([6,4,3,2,8,9,4,15,21,20,14,4,3,15,14,2,4,2,14,20,8,4,8,20,21,9,4,9,21,15,3,6,4,4,3,9,10,4,16,22,21,15,4,4,16,15,3,4,3,15,21,9,4,9,21,22,10,4,10,22,16,4])))
@@ -2033,10 +2132,11 @@ class MEDLoaderTest4(unittest.TestCase):
             mml=fcscp.buildFromScratchDataSetSupport(0,fields)
             mml2=mml.prepare()
             self.assertTrue(isinstance(mml2,MEDUMeshMultiLev))
-            a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+            ncc,a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+            self.assertTrue(ncc)
             self.assertTrue(a0.isEqual(a0Exp,1e-12))
             self.assertTrue(a1.isEqual(DataArrayByte([42,42,42])))
-            self.assertTrue(a2.isEqual(DataArrayInt([8,16,24])))
+            self.assertTrue(a2.isEqual(DataArrayInt([0,9,18])))
             self.assertTrue(a3.isEqual(DataArrayInt([8,2,3,8,9,14,15,20,21,8,3,4,9,10,15,16,21,22,8,4,5,10,11,16,17,22,23])))
             self.assertTrue(a4.isEqual(DataArrayInt([0,31,62])))
             self.assertTrue(a5.isEqual(DataArrayInt([6,4,3,2,8,9,4,15,21,20,14,4,3,15,14,2,4,2,14,20,8,4,8,20,21,9,4,9,21,15,3,6,4,4,3,9,10,4,16,22,21,15,4,4,16,15,3,4,3,15,21,9,4,9,21,22,10,4,10,22,16,4,6,4,5,4,10,11,4,17,23,22,16,4,5,17,16,4,4,4,16,22,10,4,10,22,23,11,4,11,23,17,5])))
@@ -2094,6 +2194,7 @@ class MEDLoaderTest4(unittest.TestCase):
             ########## GO for reading in MEDReader,by not loading all. Mesh is fully loaded but not fields values
             ms=MEDFileMeshes(fname)
             fields=MEDFileFields(fname,False)
+            fields.removeFieldsWithoutAnyTimeStep()
             fields_per_mesh=[fields.partOfThisLyingOnSpecifiedMeshName(meshName) for meshName in ms.getMeshesNames()]
             allFMTSLeavesToDisplay=[]
             for fields in fields_per_mesh:
@@ -2118,17 +2219,23 @@ class MEDLoaderTest4(unittest.TestCase):
             mml=fcscp.buildFromScratchDataSetSupport(0,fields)
             mml2=mml.prepare()
             self.assertTrue(isinstance(mml2,MEDUMeshMultiLev))
-            a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+            ncc,a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+            self.assertTrue(ncc)
             self.assertTrue(a0.isEqual(a0Exp,1e-12))
             self.assertTrue(a1.isEqual(DataArrayByte([42,42,42])))
-            self.assertTrue(a2.isEqual(DataArrayInt([8,16,24])))
+            self.assertTrue(a2.isEqual(DataArrayInt([0,9,18])))
             self.assertTrue(a3.isEqual(DataArrayInt([8,2,3,8,9,14,15,20,21,8,3,4,9,10,15,16,21,22,8,4,5,10,11,16,17,22,23])))
             self.assertTrue(a4.isEqual(DataArrayInt([0,31,62])))
             self.assertTrue(a5.isEqual(DataArrayInt([6,4,3,2,8,9,4,15,21,20,14,4,3,15,14,2,4,2,14,20,8,4,8,20,21,9,4,9,21,15,3,6,4,4,3,9,10,4,16,22,21,15,4,4,16,15,3,4,3,15,21,9,4,9,21,22,10,4,10,22,16,4,6,4,5,4,10,11,4,17,23,22,16,4,5,17,16,4,4,4,16,22,10,4,10,22,23,11,4,11,23,17,5])))
             for i in xrange(1,5):
                 self.assertTrue((fcscp.isDataSetSupportEqualToThePreviousOne(i,fields)))
                 pass
-            pass
+            a6,a7=mml2.retrieveFamilyIdsOnCells()
+            self.assertTrue(a6.isEqual(DataArrayInt([0,0,0])))
+            self.assertTrue(a7)
+            a8,a9=mml2.retrieveNumberIdsOnCells()
+            self.assertTrue(a8 is None)
+            self.assertTrue(a9)
             for i in xrange(5):
                 f=allFMTSLeavesPerCommonSupport[0][0][0][i]
                 fsst=MEDFileField1TSStructItem.BuildItemFrom(f,mst)
@@ -2159,7 +2266,7 @@ class MEDLoaderTest4(unittest.TestCase):
         """
         fname="ForMEDReader15.med"
         m0=MEDCouplingCMesh()
-        arr=DataArrayDouble(5) ; arr.iota(0)
+        arr=DataArrayDouble(3) ; arr.iota(0)
         m0.setCoords(arr,arr,arr)
         m0.setName("mesh")
         m0=m0.buildUnstructured()
@@ -2175,6 +2282,8 @@ class MEDLoaderTest4(unittest.TestCase):
         #
         mm=MEDFileUMesh()
         mm.setMeshAtLevel(0,m0)
+        fam=DataArrayInt(8) ; fam.iota(0) ; mm.setFamilyFieldArr(0,fam) ; del fam
+        num=DataArrayInt(8) ; num.iota(100) ; mm.setRenumFieldArr(0,num) ; del num
         #
         ffs=MEDFileFieldMultiTS()
         # TimeStep 0
@@ -2241,9 +2350,2002 @@ class MEDLoaderTest4(unittest.TestCase):
         mm.write(fname,2)
         ffs.write(fname,0)
         ########## GO for reading in MEDReader,by not loading all. Mesh is fully loaded but not fields values
-        
+        ms=MEDFileMeshes(fname)
+        fields=MEDFileFields(fname,False)
+        fields.removeFieldsWithoutAnyTimeStep()
+        fields_per_mesh=[fields.partOfThisLyingOnSpecifiedMeshName(meshName) for meshName in ms.getMeshesNames()]
+        allFMTSLeavesToDisplay=[]
+        for fields in fields_per_mesh:
+            allFMTSLeavesToDisplay2=[]
+            for fmts in fields:
+                allFMTSLeavesToDisplay2+=fmts.splitDiscretizations()
+                pass
+            allFMTSLeavesToDisplay.append(allFMTSLeavesToDisplay2)
+            pass
+        self.assertEqual(len(allFMTSLeavesToDisplay),1)
+        self.assertEqual(len(allFMTSLeavesToDisplay[0]),2)
+        allFMTSLeavesPerTimeSeries=MEDFileAnyTypeFieldMultiTS.SplitIntoCommonTimeSeries(sum(allFMTSLeavesToDisplay,[]))
+        self.assertEqual(len(allFMTSLeavesPerTimeSeries),1) # one time serie here : because the 2 fields are defined on the same time steps
+        self.assertEqual(len(allFMTSLeavesPerTimeSeries[0]),2)
+        allFMTSLeavesPerCommonSupport=MEDFileAnyTypeFieldMultiTS.SplitPerCommonSupport(allFMTSLeavesPerTimeSeries[0],ms[ms.getMeshesNames()[0]])
+        self.assertEqual(len(allFMTSLeavesPerCommonSupport),1)
+        self.assertEqual(len(allFMTSLeavesPerCommonSupport[0][0]),2)
+        #
+        mst=MEDFileMeshStruct.New(ms[0])
+        #
+        fcscp=allFMTSLeavesPerCommonSupport[0][1]
+        mml=fcscp.buildFromScratchDataSetSupport(0,fields)
+        mml2=mml.prepare()
+        self.assertTrue(isinstance(mml2,MEDUMeshMultiLev))
+        ncc,a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        self.assertTrue(ncc)
+        self.assertTrue(a0.isEqual(DataArrayDouble([0.,0.,0.,1.,0.,0.,2.,0.,0.,0.,1.,0.,1.,1.,0.,2.,1.,0.,0.,2.,0.,1.,2.,0.,2.,2.,0.,0.,0.,1.,1.,0.,1.,2.,0.,1.,0.,1.,1.,1.,1.,1.,2.,1.,1.,0.,2.,1.,1.,2.,1.,2.,2.,1.,0.,0.,2.,1.,0.,2.,2.,0.,2.,0.,1.,2.,1.,1.,2.,2.,1.,2.,0.,2.,2.,1.,2.,2.,2.,2.,2.0],27,3),1e-12))
+        self.assertTrue(a1.isEqual(DataArrayByte([12,12,12,12,12,12,12,12])))
+        self.assertTrue(a2.isEqual(DataArrayInt([0,9,18,27,36,45,54,63])))
+        self.assertTrue(a3.isEqual(DataArrayInt([8,1,0,3,4,10,9,12,13,8,2,1,4,5,11,10,13,14,8,4,3,6,7,13,12,15,16,8,5,4,7,8,14,13,16,17,8,10,9,12,13,19,18,21,22,8,11,10,13,14,20,19,22,23,8,13,12,15,16,22,21,24,25,8,14,13,16,17,23,22,25,26])))
+        self.assertTrue(a4 is None)
+        self.assertTrue(a5 is None)
+        a6,a7=mml2.retrieveFamilyIdsOnCells()
+        self.assertTrue(a6.isEqual(DataArrayInt([0,1,2,3,4,5,6,7])))
+        self.assertTrue(a7) # no copy here
+        a8,a9=mml2.retrieveNumberIdsOnCells()
+        self.assertTrue(a8.isEqual(DataArrayInt([100,101,102,103,104,105,106,107])))
+        self.assertTrue(a9) # no copy here
+        pass
+
+    def test16(self):
+        """ Here 2 meshes "mesh1" and "mesh2" and 4 fields (no profiles here) :
+        - "zeField1_0" (CELLS) and "zeField2_0" (NODES) on "mesh1"
+        - "zeField3_1" (CELLS) and "zeField4_1" (NODES) on "mesh2"
+        time steps series are the same for the whole 4 fields
+        """
+        fname="ForMEDReader16.med"
+        m0=MEDCouplingCMesh()
+        arr=DataArrayDouble(3) ; arr.iota(0)
+        m0.setCoords(arr,arr,arr)
+        m0.setName("mesh1")
+        m0=m0.buildUnstructured()
+        #
+        fCell1=MEDCouplingFieldDouble(ON_CELLS)
+        fCell1.setName("zeField1_0")
+        fCell1.setMesh(m0)
+        #
+        fNode1=MEDCouplingFieldDouble(ON_NODES)
+        fNode1.setName("zeField2_0")
+        fNode1.setMesh(m0)
+        #
+        mms=MEDFileMeshes()
+        mm1=MEDFileUMesh()
+        mm1.setMeshAtLevel(0,m0)
+        fam=DataArrayInt([0,1,0,1,2,3,2,3]); mm1.setFamilyFieldArr(0,fam) ; del fam
+        num=DataArrayInt(8) ; num.iota(100) ; mm1.setRenumFieldArr(0,num) ; del num
+        mm1.setFamilyId("FAMILLE_ZERO",0) ; mm1.setFamilyId("Family1_1",1) ; mm1.setFamilyId("Family1_2",2) ; mm1.setFamilyId("Family1_3",3) ; mm1.setFamilyId("Family1_4",4)
+        mm1.setFamiliesIdsOnGroup("Grp1_1",[0,1]) ; mm1.setFamiliesIdsOnGroup("Grp1_2",[2,3])
+        mms.pushMesh(mm1) ; del mm1
+        #
+        m1=m0.deepCpy() ; m1.translate([2.5,0.,0.]) ; m1.setName("mesh2")
+        #
+        fCell2=MEDCouplingFieldDouble(ON_CELLS)
+        fCell2.setName("zeField3_1")
+        fCell2.setMesh(m1)
+        #
+        fNode2=MEDCouplingFieldDouble(ON_NODES)
+        fNode2.setName("zeField4_1")
+        fNode2.setMesh(m1)
+        #
+        mm2=MEDFileUMesh()
+        mm2.setMeshAtLevel(0,m1)
+        fam=DataArrayInt([0,1,0,1,2,3,2,3]); mm2.setFamilyFieldArr(0,fam) ; del fam
+        num=DataArrayInt(8) ; num.iota(200) ; mm2.setRenumFieldArr(0,num) ; del num
+        mm2.setFamilyId("FAMILLE_ZERO",0) ; mm2.setFamilyId("Family2_1",1) ; mm2.setFamilyId("Family2_2",2) ; mm2.setFamilyId("Family2_3",3) ; mm2.setFamilyId("Family2_4",4)
+        mm2.setFamiliesIdsOnGroup("Grp2_1",[0,1]) ; mm2.setFamiliesIdsOnGroup("Grp2_2",[2,3]) ; mm2.setFamiliesIdsOnGroup("Grp2_3",[1,2,3])
+        mms.pushMesh(mm2) ; del mm2
+        ffs1_1=MEDFileFieldMultiTS()
+        ffs1_2=MEDFileFieldMultiTS()
+        ffs2_1=MEDFileFieldMultiTS()
+        ffs2_2=MEDFileFieldMultiTS()
+        mts=MEDFileFields()
+        for elt in ffs1_1,ffs1_2,ffs2_1,ffs2_2:
+            mts.pushField(elt)
+            pass
+        # TimeStep 0
+        t=(1.,0,0) ; off=0.
+        f1ts1=MEDFileField1TS()
+        f1ts2=MEDFileField1TS()
+        a=DataArrayDouble(m0.getNumberOfCells()) ; a.iota(off) ; a.setInfoOnComponents(["xx [m]"])
+        fCell1.setArray(a)
+        fCell1.setTime(*t)
+        fCell1.checkCoherency()
+        a=DataArrayDouble(m0.getNumberOfNodes()) ; a.iota(off) ; a.setInfoOnComponents(["xx [m]"])
+        a=a.negate()
+        fNode1.setArray(a)
+        fNode1.setTime(*t)
+        fNode1.checkCoherency()
+        f1ts1.setFieldNoProfileSBT(fCell1) ; ffs1_1.pushBackTimeStep(f1ts1)
+        f1ts2.setFieldNoProfileSBT(fNode1) ; ffs1_2.pushBackTimeStep(f1ts2)
+        #
+        f1ts1=MEDFileField1TS()
+        f1ts2=MEDFileField1TS()
+        a=DataArrayDouble(m1.getNumberOfCells()) ; a.iota(1000.+off) ; a.setInfoOnComponents(["xx [m]"])
+        fCell2.setArray(a)
+        fCell2.setTime(*t)
+        fCell2.checkCoherency()
+        a=DataArrayDouble(m1.getNumberOfNodes()) ; a.iota(1000+off) ; a.setInfoOnComponents(["xx [m]"])
+        a=a.negate()
+        fNode2.setArray(a)
+        fNode2.setTime(*t)
+        fNode2.checkCoherency()
+        f1ts1.setFieldNoProfileSBT(fCell2) ; ffs2_1.pushBackTimeStep(f1ts1)
+        f1ts2.setFieldNoProfileSBT(fNode2) ; ffs2_2.pushBackTimeStep(f1ts2)
+        # TimeStep 1
+        t=(2.1,1,0) ; off=100.
+        f1ts1=MEDFileField1TS()
+        f1ts2=MEDFileField1TS()
+        a=DataArrayDouble(m0.getNumberOfCells()) ; a.iota(off) ; a.setInfoOnComponents(["xx [m]"])
+        fCell1.setArray(a)
+        fCell1.setTime(*t)
+        fCell1.checkCoherency()
+        a=DataArrayDouble(m0.getNumberOfNodes()) ; a.iota(off) ; a.setInfoOnComponents(["xx [m]"])
+        a=a.negate()
+        fNode1.setArray(a)
+        fNode1.setTime(*t)
+        fNode1.checkCoherency()
+        f1ts1.setFieldNoProfileSBT(fCell1) ; ffs1_1.pushBackTimeStep(f1ts1)
+        f1ts2.setFieldNoProfileSBT(fNode1) ; ffs1_2.pushBackTimeStep(f1ts2)
+        #
+        f1ts1=MEDFileField1TS()
+        f1ts2=MEDFileField1TS()
+        a=DataArrayDouble(m1.getNumberOfCells()) ; a.iota(1000.+off) ; a.setInfoOnComponents(["xx [m]"])
+        fCell2.setArray(a)
+        fCell2.setTime(*t)
+        fCell2.checkCoherency()
+        a=DataArrayDouble(m1.getNumberOfNodes()) ; a.iota(1000+off) ; a.setInfoOnComponents(["xx [m]"])
+        a=a.negate()
+        fNode2.setArray(a)
+        fNode2.setTime(*t)
+        fNode2.checkCoherency()
+        f1ts1.setFieldNoProfileSBT(fCell2) ; ffs2_1.pushBackTimeStep(f1ts1)
+        f1ts2.setFieldNoProfileSBT(fNode2) ; ffs2_2.pushBackTimeStep(f1ts2)
+        # TimeStep 2
+        t=(3.1,2,0) ; off=200.
+        f1ts1=MEDFileField1TS()
+        f1ts2=MEDFileField1TS()
+        a=DataArrayDouble(m0.getNumberOfCells()) ; a.iota(off) ; a.setInfoOnComponents(["xx [m]"])
+        fCell1.setArray(a)
+        fCell1.setTime(*t)
+        fCell1.checkCoherency()
+        a=DataArrayDouble(m0.getNumberOfNodes()) ; a.iota(off) ; a.setInfoOnComponents(["xx [m]"])
+        a=a.negate()
+        fNode1.setArray(a)
+        fNode1.setTime(*t)
+        fNode1.checkCoherency()
+        f1ts1.setFieldNoProfileSBT(fCell1) ; ffs1_1.pushBackTimeStep(f1ts1)
+        f1ts2.setFieldNoProfileSBT(fNode1) ; ffs1_2.pushBackTimeStep(f1ts2)
+        #
+        f1ts1=MEDFileField1TS()
+        f1ts2=MEDFileField1TS()
+        a=DataArrayDouble(m1.getNumberOfCells()) ; a.iota(1000.+off) ; a.setInfoOnComponents(["xx [m]"])
+        fCell2.setArray(a)
+        fCell2.setTime(*t)
+        fCell2.checkCoherency()
+        a=DataArrayDouble(m1.getNumberOfNodes()) ; a.iota(1000+off) ; a.setInfoOnComponents(["xx [m]"])
+        a=a.negate()
+        fNode2.setArray(a)
+        fNode2.setTime(*t)
+        fNode2.checkCoherency()
+        f1ts1.setFieldNoProfileSBT(fCell2) ; ffs2_1.pushBackTimeStep(f1ts1)
+        f1ts2.setFieldNoProfileSBT(fNode2) ; ffs2_2.pushBackTimeStep(f1ts2)
+        #
+        mms.write(fname,2) ; mts.write(fname,0)
+        ########## GO for reading in MEDReader,by not loading all. Mesh is fully loaded but not fields values
+        ms=MEDFileMeshes(fname)
+        fields=MEDFileFields(fname,False)
+        fields.removeFieldsWithoutAnyTimeStep()
+        fields_per_mesh=[fields.partOfThisLyingOnSpecifiedMeshName(meshName) for meshName in ms.getMeshesNames()]
+        allFMTSLeavesToDisplay=[]
+        for fields in fields_per_mesh:
+            allFMTSLeavesToDisplay2=[]
+            for fmts in fields:
+                allFMTSLeavesToDisplay2+=fmts.splitDiscretizations()
+                pass
+            allFMTSLeavesToDisplay.append(allFMTSLeavesToDisplay2)
+            pass
+        self.assertEqual(len(allFMTSLeavesToDisplay),2)
+        self.assertEqual(len(allFMTSLeavesToDisplay[0]),2)
+        self.assertEqual(len(allFMTSLeavesToDisplay[1]),2)
+        allFMTSLeavesPerTimeSeries=MEDFileAnyTypeFieldMultiTS.SplitIntoCommonTimeSeries(sum(allFMTSLeavesToDisplay,[]))
+        self.assertEqual(len(allFMTSLeavesPerTimeSeries),1) # one time serie here : because the 2 fields are defined on the same time steps
+        self.assertEqual(len(allFMTSLeavesPerTimeSeries[0]),4)
+        allFMTSLeavesPerCommonSupport1=MEDFileAnyTypeFieldMultiTS.SplitPerCommonSupport(allFMTSLeavesToDisplay[0],ms[ms.getMeshesNames()[0]])
+        self.assertEqual(len(allFMTSLeavesPerCommonSupport1),1)
+        self.assertEqual(len(allFMTSLeavesPerCommonSupport1[0][0]),2)
+        allFMTSLeavesPerCommonSupport2=MEDFileAnyTypeFieldMultiTS.SplitPerCommonSupport(allFMTSLeavesToDisplay[0],ms[ms.getMeshesNames()[0]])
+        self.assertEqual(len(allFMTSLeavesPerCommonSupport2),1)
+        self.assertEqual(len(allFMTSLeavesPerCommonSupport2[0][0]),2)
         pass
 
+    def test17(self):
+        """ First test on GAUSS_NE (Elno). Here no Profiles.
+        2 times steps.
+        """
+        fname="ForMEDReader17.med"
+        fieldName1="MyFirstElno"
+        fieldName2="ACellField"
+        fieldName3="ANodeField"
+        coo=DataArrayDouble([0.,0.,1.,0.,2.,0.,0.,1.,1.,1.,2.,1.],6,2)
+        m=MEDCouplingUMesh("mesh",2)
+        m.setCoords(coo)
+        m.allocateCells()
+        m.insertNextCell(NORM_QUAD4,[0,3,4,1])
+        m.insertNextCell(NORM_QUAD4,[1,4,5,2])
+        m.checkCoherency2()
+        #
+        t=(1.1,0,-1)
+        f=MEDCouplingFieldDouble(ON_GAUSS_NE) ; f.setTime(*t) ; f.setMesh(m)
+        f.setArray(DataArrayDouble([3.,5.,7.,6.,2.,3.,11.,8.]))
+        f.setName(fieldName1)
+        f.checkCoherency()
+        MEDLoader.WriteField(fname,f,True)
+        f2=MEDCouplingFieldDouble(ON_CELLS) ; f2.setTime(*t) ; f2.setMesh(m)
+        f2.setArray(DataArrayDouble([7.,11.],2,1))
+        f2.setName(fieldName2)
+        MEDLoader.WriteFieldUsingAlreadyWrittenMesh(fname,f2)
+        f3=MEDCouplingFieldDouble(ON_NODES) ; f3.setTime(*t) ; f3.setMesh(m)
+        f3.setArray(DataArrayDouble([1.,2.,4.,1.,2.,4.],6,1))
+        f3.setName(fieldName3)
+        MEDLoader.WriteFieldUsingAlreadyWrittenMesh(fname,f3)
+        #
+        t=(2.1,1,-1)
+        f=MEDCouplingFieldDouble(ON_GAUSS_NE) ; f.setTime(*t) ; f.setMesh(m)
+        f.setArray(DataArrayDouble([7.,6.,3.,5.,11.,8.,2.,3.]))
+        f.setName(fieldName1)
+        f.checkCoherency()
+        MEDLoader.WriteFieldUsingAlreadyWrittenMesh(fname,f)
+        f2=MEDCouplingFieldDouble(ON_CELLS) ; f2.setTime(*t) ; f2.setMesh(m)
+        f2.setArray(DataArrayDouble([11.,7.],2,1))
+        f2.setName(fieldName2)
+        MEDLoader.WriteFieldUsingAlreadyWrittenMesh(fname,f2)
+        f3=MEDCouplingFieldDouble(ON_NODES) ; f3.setTime(*t) ; f3.setMesh(m)
+        f3.setArray(DataArrayDouble([4.,2.,1.,4.,2.,1.],6,1))
+        f3.setName(fieldName3)
+        MEDLoader.WriteFieldUsingAlreadyWrittenMesh(fname,f3)
+        ########## GO for reading in MEDReader,by not loading all. Mesh is fully loaded but not fields values
+        ms=MEDFileMeshes(fname)
+        fields=MEDFileFields(fname,False)
+        fields.removeFieldsWithoutAnyTimeStep()
+        fields_per_mesh=[fields.partOfThisLyingOnSpecifiedMeshName(meshName) for meshName in ms.getMeshesNames()]
+        allFMTSLeavesToDisplay=[]
+        for fields in fields_per_mesh:
+            allFMTSLeavesToDisplay2=[]
+            for fmts in fields:
+                allFMTSLeavesToDisplay2+=fmts.splitDiscretizations()
+                pass
+            allFMTSLeavesToDisplay.append(allFMTSLeavesToDisplay2)
+            pass
+        self.assertEqual(len(allFMTSLeavesToDisplay),1)
+        self.assertEqual(len(allFMTSLeavesToDisplay[0]),3)
+        allFMTSLeavesPerTimeSeries=MEDFileAnyTypeFieldMultiTS.SplitIntoCommonTimeSeries(sum(allFMTSLeavesToDisplay,[]))
+        self.assertEqual(len(allFMTSLeavesPerTimeSeries),1)
+        self.assertEqual(len(allFMTSLeavesPerTimeSeries[0]),3)
+        allFMTSLeavesPerCommonSupport1=MEDFileAnyTypeFieldMultiTS.SplitPerCommonSupport(allFMTSLeavesToDisplay[0],ms[ms.getMeshesNames()[0]])
+        self.assertEqual(len(allFMTSLeavesPerCommonSupport1),1)
+        self.assertEqual(len(allFMTSLeavesPerCommonSupport1[0][0]),3)
+        #
+        mst=MEDFileMeshStruct.New(ms[0])
+        #
+        fcscp=allFMTSLeavesPerCommonSupport1[0][1]
+        mml=fcscp.buildFromScratchDataSetSupport(0,fields)
+        mml2=mml.prepare()
+        self.assertTrue(isinstance(mml2,MEDUMeshMultiLev))
+        ncc,a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        self.assertTrue(not ncc) # spaceDim 2 -> VTK wants 3D
+        self.assertTrue(a0.isEqual(DataArrayDouble([0.,0.,0.,1.,0.,0.,2.,0.,0.,0.,1.,0.,1.,1.,0.,2.,1.,0.],6,3),1e-12))
+        self.assertTrue(a1.isEqual(DataArrayByte([9,9])))
+        self.assertTrue(a2.isEqual(DataArrayInt([0,5])))
+        self.assertTrue(a3.isEqual(DataArrayInt([4,0,3,4,1,4,1,4,5,2])))
+        self.assertTrue(a4 is None)
+        self.assertTrue(a5 is None)
+        a6,a7=mml2.retrieveFamilyIdsOnCells()
+        self.assertTrue(a6.isEqual(DataArrayInt([0,0])))
+        self.assertTrue(a7) # no copy here
+        a8,a9=mml2.retrieveNumberIdsOnCells()
+        self.assertTrue(a8.isEqual(DataArrayInt([0,1])))
+        self.assertTrue(a9) # no copy here
+        for i in xrange(1,2):
+            self.assertTrue((fcscp.isDataSetSupportEqualToThePreviousOne(i,fields)))
+            pass
+        vExp0=[DataArrayDouble([7.,11.]),DataArrayDouble([11.,7.])]
+        vExp1=[DataArrayDouble([3.,5.,7.,6.,2.,3.,11.,8.]),DataArrayDouble([7.,6.,3.,5.,11.,8.,2.,3.])]
+        for i in xrange(2):
+            f=allFMTSLeavesPerCommonSupport1[0][0][0][i]
+            fsst=MEDFileField1TSStructItem.BuildItemFrom(f,mst)
+            f.loadArraysIfNecessary()
+            v=mml.buildDataArray(fsst,fields,f.getUndergroundDataArray())
+            self.assertEqual(f.getName(),fieldName2)
+            self.assertEqual(v.getHiddenCppPointer(),f.getUndergroundDataArray().getHiddenCppPointer())
+            self.assertTrue(v.isEqual(vExp0[i],1e-12))
+            #
+            f=allFMTSLeavesPerCommonSupport1[0][0][1][i]
+            fsst=MEDFileField1TSStructItem.BuildItemFrom(f,mst)
+            f.loadArraysIfNecessary()
+            v=mml.buildDataArray(fsst,fields,f.getUndergroundDataArray())
+            self.assertEqual(f.getName(),fieldName1)
+            self.assertEqual(v.getHiddenCppPointer(),f.getUndergroundDataArray().getHiddenCppPointer())
+            self.assertTrue(v.isEqual(vExp1[i],1e-12))
+            pass
+        pass
+    
+    def test18(self):
+        """ First test on GAUSS_PT. Here no Profiles. 2 times steps.
+        """
+        fname="ForMEDReader18.med"
+        fieldName1="MyFirstGauss"
+        fieldName2="ACellField"
+        fieldName3="ANodeField"
+        coo=DataArrayDouble([0.,0.,1.,0.,2.,0.,0.,1.,1.,1.,2.,1.],6,2)
+        m=MEDCouplingUMesh("mesh",2)
+        m.setCoords(coo)
+        m.allocateCells()
+        m.insertNextCell(NORM_QUAD4,[0,3,4,1])
+        m.insertNextCell(NORM_QUAD4,[1,4,5,2])
+        m.checkCoherency2()
+        #
+        t=(1.1,0,-1)
+        f=MEDCouplingFieldDouble(ON_GAUSS_PT) ; f.setTime(*t) ; f.setMesh(m)
+        f.setGaussLocalizationOnType(NORM_QUAD4,[-1.,-1.,1.,-1.,1.,1.,-1.,1.],[0.2,0.2,0.8,0.8],[0.7,0.3])
+        f.setArray(DataArrayDouble([3.,5.,4.,6.])) ; f.getArray().setInfoOnComponents(["Smth"])
+        f.setName(fieldName1)
+        f.checkCoherency()
+        MEDLoader.WriteField(fname,f,True)
+        f2=MEDCouplingFieldDouble(ON_CELLS) ; f2.setTime(*t) ; f2.setMesh(m)
+        f2.setArray(DataArrayDouble([7.,11.],2,1))
+        f2.setName(fieldName2)
+        MEDLoader.WriteFieldUsingAlreadyWrittenMesh(fname,f2)
+        f3=MEDCouplingFieldDouble(ON_NODES) ; f3.setTime(*t) ; f3.setMesh(m)
+        f3.setArray(DataArrayDouble([1.,2.,4.,1.,2.,4.],6,1))
+        f3.setName(fieldName3)
+        MEDLoader.WriteFieldUsingAlreadyWrittenMesh(fname,f3)
+        #
+        t=(2.1,1,-1)
+        f=MEDCouplingFieldDouble(ON_GAUSS_PT) ; f.setTime(*t) ; f.setMesh(m)
+        f.setGaussLocalizationOnType(NORM_QUAD4,[-1.,-1.,1.,-1.,1.,1.,-1.,1.],[0.2,0.2,0.8,0.8],[0.7,0.3])
+        f.setArray(DataArrayDouble([5.,3.,6.,4.])) ; f.getArray().setInfoOnComponents(["Smth"])
+        f.setName(fieldName1)
+        f.checkCoherency()
+        MEDLoader.WriteFieldUsingAlreadyWrittenMesh(fname,f)
+        f2=MEDCouplingFieldDouble(ON_CELLS) ; f2.setTime(*t) ; f2.setMesh(m)
+        f2.setArray(DataArrayDouble([11.,7.],2,1))
+        f2.setName(fieldName2)
+        MEDLoader.WriteFieldUsingAlreadyWrittenMesh(fname,f2)
+        f3=MEDCouplingFieldDouble(ON_NODES) ; f3.setTime(*t) ; f3.setMesh(m)
+        f3.setArray(DataArrayDouble([4.,2.,1.,4.,2.,1.],6,1))
+        f3.setName(fieldName3)
+        MEDLoader.WriteFieldUsingAlreadyWrittenMesh(fname,f3)
+        ########## GO for reading in MEDReader,by not loading all. Mesh is fully loaded but not fields values
+        ms=MEDFileMeshes(fname)
+        fields=MEDFileFields(fname,False)
+        fields.removeFieldsWithoutAnyTimeStep()
+        fields_per_mesh=[fields.partOfThisLyingOnSpecifiedMeshName(meshName) for meshName in ms.getMeshesNames()]
+        allFMTSLeavesToDisplay=[]
+        for fields in fields_per_mesh:
+            allFMTSLeavesToDisplay2=[]
+            for fmts in fields:
+                allFMTSLeavesToDisplay2+=fmts.splitDiscretizations()
+                pass
+            allFMTSLeavesToDisplay.append(allFMTSLeavesToDisplay2)
+            pass
+        self.assertEqual(len(allFMTSLeavesToDisplay),1)
+        self.assertEqual(len(allFMTSLeavesToDisplay[0]),3)
+        allFMTSLeavesPerTimeSeries=MEDFileAnyTypeFieldMultiTS.SplitIntoCommonTimeSeries(sum(allFMTSLeavesToDisplay,[]))
+        self.assertEqual(len(allFMTSLeavesPerTimeSeries),1)
+        self.assertEqual(len(allFMTSLeavesPerTimeSeries[0]),3)
+        allFMTSLeavesPerCommonSupport1=MEDFileAnyTypeFieldMultiTS.SplitPerCommonSupport(allFMTSLeavesToDisplay[0],ms[ms.getMeshesNames()[0]])
+        self.assertEqual(len(allFMTSLeavesPerCommonSupport1),1)
+        self.assertEqual(len(allFMTSLeavesPerCommonSupport1[0][0]),3)
+        #
+        mst=MEDFileMeshStruct.New(ms[0])
+        #
+        fcscp=allFMTSLeavesPerCommonSupport1[0][1]
+        self.assertEqual([NORM_QUAD4],fcscp.getGeoTypesAt(0,ms[0]))
+        mml=fcscp.buildFromScratchDataSetSupport(0,fields)
+        mml2=mml.prepare()
+        self.assertTrue(isinstance(mml2,MEDUMeshMultiLev))
+        ncc,a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        self.assertTrue(not ncc) # spaceDim 2 -> VTK wants 3D
+        self.assertTrue(a0.isEqual(DataArrayDouble([0.,0.,0.,1.,0.,0.,2.,0.,0.,0.,1.,0.,1.,1.,0.,2.,1.,0.],6,3),1e-12))
+        self.assertTrue(a1.isEqual(DataArrayByte([9,9])))
+        self.assertTrue(a2.isEqual(DataArrayInt([0,5])))
+        self.assertTrue(a3.isEqual(DataArrayInt([4,0,3,4,1,4,1,4,5,2])))
+        self.assertTrue(a4 is None)
+        self.assertTrue(a5 is None)
+        a6,a7=mml2.retrieveFamilyIdsOnCells()
+        self.assertTrue(a6.isEqual(DataArrayInt([0,0])))
+        self.assertTrue(a7) # no copy here
+        a8,a9=mml2.retrieveNumberIdsOnCells()
+        self.assertTrue(a8.isEqual(DataArrayInt([0,1])))
+        self.assertTrue(a9) # no copy here
+        for i in xrange(1,2):
+            self.assertTrue((fcscp.isDataSetSupportEqualToThePreviousOne(i,fields)))
+            pass
+        vExp0=[DataArrayDouble([7.,11.]),DataArrayDouble([11.,7.])]
+        vExp1=[DataArrayDouble([3.,5.,4.,6.]),DataArrayDouble([5.,3.,6.,4.])]
+        for i in xrange(2):
+            f=allFMTSLeavesPerCommonSupport1[0][0][0][i]
+            fsst=MEDFileField1TSStructItem.BuildItemFrom(f,mst)
+            f.loadArraysIfNecessary()
+            v=mml.buildDataArray(fsst,fields,f.getUndergroundDataArray())
+            self.assertEqual(f.getName(),fieldName2)
+            self.assertEqual(v.getHiddenCppPointer(),f.getUndergroundDataArray().getHiddenCppPointer())
+            self.assertTrue(v.isEqual(vExp0[i],1e-12))
+            #
+            f=allFMTSLeavesPerCommonSupport1[0][0][1][i]
+            fsst=MEDFileField1TSStructItem.BuildItemFrom(f,mst)
+            f.loadArraysIfNecessary()
+            v=mml.buildDataArray(fsst,fields,f.getUndergroundDataArray())
+            self.assertEqual(f.getName(),fieldName1)
+            self.assertEqual(v.getHiddenCppPointer(),f.getUndergroundDataArray().getHiddenCppPointer())
+            vExp1[i].setInfoOnComponents(["Smth"])
+            self.assertTrue(v.isEqual(vExp1[i],1e-12))
+            pass
+        ## Now same exercise but with a different load strategy. All is load directly.
+        ms=MEDFileMeshes(fname)
+        fields=MEDFileFields(fname) # here all is read, the SauvReader (or other Reader) is emulated
+        fields_per_mesh=[fields.partOfThisLyingOnSpecifiedMeshName(meshName) for meshName in ms.getMeshesNames()]
+        allFMTSLeavesToDisplay=[]
+        for fields in fields_per_mesh:
+            allFMTSLeavesToDisplay2=[]
+            for fmts in fields:
+                allFMTSLeavesToDisplay2+=fmts.splitDiscretizations()
+                pass
+            allFMTSLeavesToDisplay.append(allFMTSLeavesToDisplay2)
+            pass
+        self.assertEqual(len(allFMTSLeavesToDisplay),1)
+        self.assertEqual(len(allFMTSLeavesToDisplay[0]),3)
+        allFMTSLeavesPerTimeSeries=MEDFileAnyTypeFieldMultiTS.SplitIntoCommonTimeSeries(sum(allFMTSLeavesToDisplay,[]))
+        self.assertEqual(len(allFMTSLeavesPerTimeSeries),1)
+        self.assertEqual(len(allFMTSLeavesPerTimeSeries[0]),3)
+        allFMTSLeavesPerCommonSupport1=MEDFileAnyTypeFieldMultiTS.SplitPerCommonSupport(allFMTSLeavesToDisplay[0],ms[ms.getMeshesNames()[0]])
+        self.assertEqual(len(allFMTSLeavesPerCommonSupport1),1)
+        self.assertEqual(len(allFMTSLeavesPerCommonSupport1[0][0]),3)
+        #
+        mst=MEDFileMeshStruct.New(ms[0])
+        #
+        fcscp=allFMTSLeavesPerCommonSupport1[0][1]
+        mml=fcscp.buildFromScratchDataSetSupport(0,fields)
+        mml2=mml.prepare()
+        self.assertTrue(isinstance(mml2,MEDUMeshMultiLev))
+        ncc,a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        self.assertTrue(not ncc) # spaceDim 2 -> VTK wants 3D
+        self.assertTrue(a0.isEqual(DataArrayDouble([0.,0.,0.,1.,0.,0.,2.,0.,0.,0.,1.,0.,1.,1.,0.,2.,1.,0.],6,3),1e-12))
+        self.assertTrue(a1.isEqual(DataArrayByte([9,9])))
+        self.assertTrue(a2.isEqual(DataArrayInt([0,5])))
+        self.assertTrue(a3.isEqual(DataArrayInt([4,0,3,4,1,4,1,4,5,2])))
+        self.assertTrue(a4 is None)
+        self.assertTrue(a5 is None)
+        a6,a7=mml2.retrieveFamilyIdsOnCells()
+        self.assertTrue(a6.isEqual(DataArrayInt([0,0])))
+        self.assertTrue(a7) # no copy here
+        a8,a9=mml2.retrieveNumberIdsOnCells()
+        self.assertTrue(a8.isEqual(DataArrayInt([0,1])))
+        self.assertTrue(a9) # no copy here
+        for i in xrange(1,2):
+            self.assertTrue((fcscp.isDataSetSupportEqualToThePreviousOne(i,fields)))
+            pass
+        vExp0=[DataArrayDouble([7.,11.]),DataArrayDouble([11.,7.])]
+        vExp1=[DataArrayDouble([3.,5.,4.,6.]),DataArrayDouble([5.,3.,6.,4.])]
+        for i in xrange(2):
+            f=allFMTSLeavesPerCommonSupport1[0][0][0][i]
+            fsst=MEDFileField1TSStructItem.BuildItemFrom(f,mst) # no load needed here
+            v=mml.buildDataArray(fsst,fields,f.getUndergroundDataArray())
+            self.assertEqual(f.getName(),fieldName2)
+            self.assertEqual(v.getHiddenCppPointer(),f.getUndergroundDataArray().getHiddenCppPointer())
+            self.assertTrue(v.isEqual(vExp0[i],1e-12))
+            #
+            f=allFMTSLeavesPerCommonSupport1[0][0][1][i]
+            fsst=MEDFileField1TSStructItem.BuildItemFrom(f,mst) # no load needed here
+            v=mml.buildDataArray(fsst,fields,f.getUndergroundDataArray())
+            self.assertEqual(f.getName(),fieldName1)
+            self.assertEqual(v.getHiddenCppPointer(),f.getUndergroundDataArray().getHiddenCppPointer())
+            vExp1[i].setInfoOnComponents(["Smth"])
+            self.assertTrue(v.isEqual(vExp1[i],1e-12))
+            pass
+        pass
+    
+    def test19(self):
+        """
+        This test is a simple non profile CELL field but lying on cells of dimension -1 (not 0 as "usual").
+        """
+        fname="ForMEDReader19.med"
+        fieldName="ACellFieldOnDimM1"
+        coo=DataArrayDouble(3) ; coo.iota()
+        m=MEDCouplingCMesh() ; m.setCoords(coo,coo,coo) ; m.setName("mesh")
+        m0=m.buildUnstructured() ; del m
+        m1=m0.computeSkin()
+        #
+        mm=MEDFileUMesh()                                
+        mm.setMeshAtLevel(0,m0)
+        mm.setMeshAtLevel(-1,m1)
+        ff=MEDFileFieldMultiTS()
+        # time 0
+        t=(1.1,1,-1)
+        f=MEDCouplingFieldDouble(ON_CELLS) ; f.setTime(*t) ; f.setMesh(m1)
+        f.setName(fieldName)
+        arr=DataArrayDouble(24) ; arr.iota() ; arr.setInfoOnComponents(["AStr"])
+        f.setArray(arr)
+        f.checkCoherency()
+        f1ts=MEDFileField1TS() ; f1ts.setFieldNoProfileSBT(f)
+        ff.pushBackTimeStep(f1ts)
+        # time 1
+        t=(2.1,2,-2)
+        f=MEDCouplingFieldDouble(ON_CELLS) ; f.setTime(*t) ; f.setMesh(m1)
+        f.setName(fieldName)
+        arr=DataArrayDouble(24) ; arr.iota() ; arr.reverse() ; arr.setInfoOnComponents(["AStr"])
+        f.setArray(arr)
+        f.checkCoherency()
+        f1ts=MEDFileField1TS() ; f1ts.setFieldNoProfileSBT(f)
+        ff.pushBackTimeStep(f1ts)
+        #
+        mm.write(fname,2)
+        ff.write(fname,0)
+        ########## GO for reading in MEDReader,by not loading all. Mesh is fully loaded but not fields values
+        ms=MEDFileMeshes(fname)
+        fields=MEDFileFields(fname,False)
+        fields.removeFieldsWithoutAnyTimeStep()
+        fields_per_mesh=[fields.partOfThisLyingOnSpecifiedMeshName(meshName) for meshName in ms.getMeshesNames()]
+        allFMTSLeavesToDisplay=[]
+        for fields in fields_per_mesh:
+            allFMTSLeavesToDisplay2=[]
+            for fmts in fields:
+                allFMTSLeavesToDisplay2+=fmts.splitDiscretizations()
+                pass
+            allFMTSLeavesToDisplay.append(allFMTSLeavesToDisplay2)
+            pass
+        self.assertEqual(len(allFMTSLeavesToDisplay),1)
+        self.assertEqual(len(allFMTSLeavesToDisplay[0]),1)
+        allFMTSLeavesPerTimeSeries=MEDFileAnyTypeFieldMultiTS.SplitIntoCommonTimeSeries(sum(allFMTSLeavesToDisplay,[]))
+        self.assertEqual(len(allFMTSLeavesPerTimeSeries),1)
+        self.assertEqual(len(allFMTSLeavesPerTimeSeries[0]),1)
+        allFMTSLeavesPerCommonSupport1=MEDFileAnyTypeFieldMultiTS.SplitPerCommonSupport(allFMTSLeavesToDisplay[0],ms[ms.getMeshesNames()[0]])
+        self.assertEqual(len(allFMTSLeavesPerCommonSupport1),1)
+        self.assertEqual(len(allFMTSLeavesPerCommonSupport1[0][0]),1)
+        #
+        mst=MEDFileMeshStruct.New(ms[0])
+        #
+        fcscp=allFMTSLeavesPerCommonSupport1[0][1]
+        mml=fcscp.buildFromScratchDataSetSupport(0,fields)
+        mml2=mml.prepare()
+        self.assertTrue(isinstance(mml2,MEDUMeshMultiLev))
+        ncc,a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        self.assertTrue(ncc)
+        self.assertTrue(a0.isEqual(DataArrayDouble([0.,0.,0.,1.,0.,0.,2.,0.,0.,0.,1.,0.,1.,1.,0.,2.,1.,0.,0.,2.,0.,1.,2.,0.,2.,2.,0.,0.,0.,1.,1.,0.,1.,2.,0.,1.,0.,1.,1.,1.,1.,1.,2.,1.,1.,0.,2.,1.,1.,2.,1.,2.,2.,1.,0.,0.,2.,1.,0.,2.,2.,0.,2.,0.,1.,2.,1.,1.,2.,2.,1.,2.,0.,2.,2.,1.,2.,2.,2.,2.,2.],27,3),1e-12))
+        self.assertTrue(a1.isEqual(DataArrayByte([9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9])))
+        self.assertTrue(a2.isEqual(DataArrayInt([0,5,10,15,20,25,30,35,40,45,50,55,60,65,70,75,80,85,90,95,100,105,110,115])))
+        self.assertTrue(a3.isEqual(DataArrayInt([4,1,0,3,4,4,1,10,9,0,4,0,9,12,3,4,2,1,4,5,4,2,11,10,1,4,5,14,11,2,4,4,3,6,7,4,3,12,15,6,4,6,15,16,7,4,5,4,7,8,4,7,16,17,8,4,8,17,14,5,4,19,22,21,18,4,10,19,18,9,4,9,18,21,12,4,20,23,22,19,4,11,20,19,10,4,14,23,20,11,4,22,25,24,21,4,12,21,24,15,4,15,24,25,16,4,23,26,25,22,4,16,25,26,17,4,17,26,23,14])))
+        self.assertTrue(a4 is None)
+        self.assertTrue(a5 is None)
+        a6,a7=mml2.retrieveFamilyIdsOnCells()
+        self.assertTrue(a6.isEqual(DataArrayInt([0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0])))
+        self.assertTrue(a7) # no copy here
+        a8,a9=mml2.retrieveNumberIdsOnCells()
+        self.assertTrue(a8 is None)
+        self.assertTrue(a9) # no copy here
+        a10,a11=mml2.retrieveFamilyIdsOnNodes()
+        self.assertTrue(not a10)
+        self.assertTrue(a11) # no copy here
+        a12,a13=mml2.retrieveNumberIdsOnNodes()
+        self.assertTrue(not a12)
+        self.assertTrue(a13) # no copy here
+        for i in xrange(1,2):
+            self.assertTrue((fcscp.isDataSetSupportEqualToThePreviousOne(i,fields)))
+            pass
+        for i in xrange(2):
+            f=allFMTSLeavesPerCommonSupport1[0][0][0][i]
+            fsst=MEDFileField1TSStructItem.BuildItemFrom(f,mst)
+            f.loadArraysIfNecessary()
+            v=mml.buildDataArray(fsst,fields,f.getUndergroundDataArray())
+            self.assertEqual(f.getName(),fieldName)
+            self.assertEqual(v.getHiddenCppPointer(),f.getUndergroundDataArray().getHiddenCppPointer())
+            vExp=DataArrayDouble(24) ; vExp.iota()
+            if i==1: vExp.reverse()
+            vExp.setInfoOnComponents(["AStr"])
+            self.assertTrue(v.isEqual(vExp,1e-12))
+            pass
+        pass
+
+    def test20(self):
+        """ This test works with groups/families on cells AND on nodes. Here 4 fields each on same time steps (2).
+        1 field on CELLS without profile, 1 field on CELLS with profile, 1 field on NODES without profile, 1 field on NODES with profile.
+        All of these 4 fields lies on a single mesh "mesh". The 2 fields on profile lies on a same support.
+        One drawback of this test : no multi geom type. Coming soon !
+        """
+        fname="ForMEDReader20.med"
+        fieldName0="ANodeField"
+        fieldName1="ACellField"
+        fieldName2="ANodeFieldPfl"
+        fieldName3="ACellFieldPfl"
+        pfl2=DataArrayInt([5,6,7,10,11,12,15,16,17,20,21,22]) ; pfl2.setName("pfl2")
+        pfl3=DataArrayInt([4,5,8,9,12,13]) ; pfl3.setName("pfl3")
+        #
+        arr=DataArrayDouble(5) ; arr.iota()
+        m=MEDCouplingCMesh("mesh") ; m.setCoords(arr,arr)
+        m=m.buildUnstructured()
+        mm=MEDFileUMesh()
+        mm.setMeshAtLevel(0,m)
+        fs=MEDFileFields()
+        fmts0=MEDFileFieldMultiTS() ; fs.pushField(fmts0)
+        fmts0.setDtUnit("s")
+        fmts1=MEDFileFieldMultiTS() ; fs.pushField(fmts1)
+        fmts1.setDtUnit("s")
+        fmts2=MEDFileFieldMultiTS() ; fs.pushField(fmts2)
+        fmts2.setDtUnit("s")
+        fmts3=MEDFileFieldMultiTS() ; fs.pushField(fmts3)
+        fmts3.setDtUnit("s")
+        ####
+        t=(1.1,0,-2)
+        f0=MEDCouplingFieldDouble(ON_NODES) ; f0.setMesh(m)
+        f0.setName(fieldName0) ; f0.setTime(*t)
+        da=m.getCoords().magnitude() ; da.setInfoOnComponents(["zeInfo"])
+        f0.setArray(da)
+        f0.checkCoherency()
+        f1ts=MEDFileField1TS()
+        f1ts.setFieldNoProfileSBT(f0)
+        fmts0.pushBackTimeStep(f1ts)
+        #
+        f1=MEDCouplingFieldDouble(ON_CELLS) ; f1.setMesh(m)
+        f1.setName(fieldName1) ; f1.setTime(*t)
+        da=m.getBarycenterAndOwner().magnitude() ; da.setInfoOnComponents(["zeInfoCell"])
+        f1.setArray(da)
+        f1.checkCoherency()
+        f1ts=MEDFileField1TS()
+        f1ts.setFieldNoProfileSBT(f1)
+        fmts1.pushBackTimeStep(f1ts)
+        #
+        f2=MEDCouplingFieldDouble(ON_NODES) ; mTmp=m[pfl3] ; mTmp.zipCoords() ; mTmp.setName(m.getName()) ; f2.setMesh(mTmp)
+        f2.setName(fieldName2) ; f2.setTime(*t)
+        da=m.getCoords().magnitude()[pfl2] ; da.setInfoOnComponents(["zzzz"])
+        f2.setArray(da)
+        f2.checkCoherency()
+        f1ts=MEDFileField1TS()
+        f1ts.setFieldProfile(f2,mm,0,pfl2)
+        fmts2.pushBackTimeStep(f1ts)
+        #
+        f3=MEDCouplingFieldDouble(ON_CELLS) ; mTmp=m[pfl3] ; mTmp.setName(m.getName()) ; f3.setMesh(mTmp)
+        f3.setName(fieldName3) ; f3.setTime(*t)
+        da=mTmp.getBarycenterAndOwner().magnitude() ; da.setInfoOnComponents(["abcdefg"])
+        f3.setArray(da)
+        f3.checkCoherency()
+        f1ts=MEDFileField1TS()
+        f1ts.setFieldProfile(f3,mm,0,pfl3)
+        fmts3.pushBackTimeStep(f1ts)
+        ####
+        t=(2.1,1,-3)
+        f0=MEDCouplingFieldDouble(ON_NODES) ; f0.setMesh(m)
+        f0.setName(fieldName0) ; f0.setTime(*t)
+        da=m.getCoords().magnitude() ; da.reverse() ; da.setInfoOnComponents(["zeInfo"])
+        f0.setArray(da)
+        f0.checkCoherency()
+        f1ts=MEDFileField1TS()
+        f1ts.setFieldNoProfileSBT(f0)
+        fmts0.pushBackTimeStep(f1ts)
+        #
+        f1=MEDCouplingFieldDouble(ON_CELLS) ; f1.setMesh(m)
+        f1.setName(fieldName1) ; f1.setTime(*t)
+        da=m.getBarycenterAndOwner().magnitude() ; da.reverse() ; da.setInfoOnComponents(["zeInfoCell"])
+        f1.setArray(da)
+        f1.checkCoherency()
+        f1ts=MEDFileField1TS()
+        f1ts.setFieldNoProfileSBT(f1)
+        fmts1.pushBackTimeStep(f1ts)
+        #
+        f2=MEDCouplingFieldDouble(ON_NODES) ; mTmp=m[pfl3] ; mTmp.zipCoords() ; mTmp.setName(m.getName()) ; f2.setMesh(mTmp)
+        f2.setName(fieldName2) ; f2.setTime(*t)
+        da=m.getCoords().magnitude()[pfl2] ; da.reverse() ; da.setInfoOnComponents(["zzzz"])
+        f2.setArray(da)
+        f2.checkCoherency()
+        f1ts=MEDFileField1TS()
+        f1ts.setFieldProfile(f2,mm,0,pfl2)
+        fmts2.pushBackTimeStep(f1ts)
+        #
+        f3=MEDCouplingFieldDouble(ON_CELLS) ; mTmp=m[pfl3] ; mTmp.setName(m.getName()) ; f3.setMesh(mTmp)
+        f3.setName(fieldName3) ; f3.setTime(*t)
+        da=mTmp.getBarycenterAndOwner().magnitude() ; da.reverse() ; da.setInfoOnComponents(["abcdefg"])
+        f3.setArray(da)
+        f3.checkCoherency()
+        f1ts=MEDFileField1TS()
+        f1ts.setFieldProfile(f3,mm,0,pfl3)
+        fmts3.pushBackTimeStep(f1ts)
+        ####
+        grp1=DataArrayInt([6,7,8,11,12,13,16,17,18]) ; grp1.setName("grp1")
+        grp2=DataArrayInt([10,11,15,16,20,21]) ; grp2.setName("grp2")
+        mm.setGroupsAtLevel(1,[grp1,grp2])
+        grp3=DataArrayInt([4,5,6]) ; grp3.setName("grp3")
+        grp4=DataArrayInt([8,9,10]) ; grp4.setName("grp4")
+        mm.setGroupsAtLevel(0,[grp3,grp4])
+        d=DataArrayInt(25) ; d.iota() ; d*=10 ;  mm.setRenumFieldArr(1,d)
+        d=DataArrayInt(16) ; d.iota() ; d*=11 ;  mm.setRenumFieldArr(0,d)
+        mm.write(fname,2)
+        fs.appendGlobs(fmts2,1e-12)
+        fs.appendGlobs(fmts3,1e-12)
+        fs.write(fname,0)
+        ########## GO for reading in MEDReader,by not loading all. Mesh is fully loaded but not fields values
+        ms=MEDFileMeshes(fname)
+        fields=MEDFileFields(fname,False)
+        fields.removeFieldsWithoutAnyTimeStep()
+        fields_per_mesh=[fields.partOfThisLyingOnSpecifiedMeshName(meshName) for meshName in ms.getMeshesNames()]
+        allFMTSLeavesToDisplay=[]
+        for fields in fields_per_mesh:
+            allFMTSLeavesToDisplay2=[]
+            for fmts in fields:
+                allFMTSLeavesToDisplay2+=fmts.splitDiscretizations()
+                pass
+            allFMTSLeavesToDisplay.append(allFMTSLeavesToDisplay2)
+            pass
+        self.assertEqual(len(allFMTSLeavesToDisplay),1)
+        self.assertEqual(len(allFMTSLeavesToDisplay[0]),4)
+        allFMTSLeavesPerTimeSeries=MEDFileAnyTypeFieldMultiTS.SplitIntoCommonTimeSeries(sum(allFMTSLeavesToDisplay,[]))
+        self.assertEqual(len(allFMTSLeavesPerTimeSeries),1)
+        self.assertEqual(len(allFMTSLeavesPerTimeSeries[0]),4)
+        allFMTSLeavesPerCommonSupport1=MEDFileAnyTypeFieldMultiTS.SplitPerCommonSupport(allFMTSLeavesToDisplay[0],ms[ms.getMeshesNames()[0]])
+        self.assertEqual(len(allFMTSLeavesPerCommonSupport1),2)
+        self.assertEqual(len(allFMTSLeavesPerCommonSupport1[0][0]),2)
+        self.assertEqual(len(allFMTSLeavesPerCommonSupport1[1][0]),2)
+        #
+        mst=MEDFileMeshStruct.New(ms[0])
+        #
+        fcscp=allFMTSLeavesPerCommonSupport1[0][1]
+        mml=fcscp.buildFromScratchDataSetSupport(0,fields)
+        mml2=mml.prepare()
+        self.assertTrue(isinstance(mml2,MEDUMeshMultiLev))
+        ncc,a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        self.assertTrue(not ncc)
+        self.assertTrue(a0.isEqual(DataArrayDouble([0.,0.,0.,1.,0.,0.,2.,0.,0.,3.,0.,0.,4.,0.,0.,0.,1.,0.,1.,1.,0.,2.,1.,0.,3.,1.,0.,4.,1.,0.,0.,2.,0.,1.,2.,0.,2.,2.,0.,3.,2.,0.,4.,2.,0.,0.,3.,0.,1.,3.,0.,2.,3.,0.,3.,3.,0.,4.,3.,0.,0.,4.,0.,1.,4.,0.,2.,4.,0.,3.,4.,0.,4.,4.,0.],25,3),1e-12))
+        self.assertTrue(a1.isEqual(DataArrayByte([9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9])))
+        self.assertTrue(a2.isEqual(DataArrayInt([0,5,10,15,20,25,30,35,40,45,50,55,60,65,70,75])))
+        self.assertTrue(a3.isEqual(DataArrayInt([4,1,0,5,6,4,2,1,6,7,4,3,2,7,8,4,4,3,8,9,4,6,5,10,11,4,7,6,11,12,4,8,7,12,13,4,9,8,13,14,4,11,10,15,16,4,12,11,16,17,4,13,12,17,18,4,14,13,18,19,4,16,15,20,21,4,17,16,21,22,4,18,17,22,23,4,19,18,23,24])))
+        self.assertTrue(a4 is None)
+        self.assertTrue(a5 is None)
+        a6,a7=mml2.retrieveFamilyIdsOnCells()
+        self.assertTrue(a6.isEqual(DataArrayInt([-5,-5,-5,-5,-6,-6,-6,-5,-7,-7,-7,-5,-5,-5,-5,-5])))
+        self.assertTrue(a7) # no copy here
+        a8,a9=mml2.retrieveNumberIdsOnCells()
+        self.assertTrue(a8.isEqual(DataArrayInt([0,11,22,33,44,55,66,77,88,99,110,121,132,143,154,165])))
+        self.assertTrue(a9) # no copy here
+        a10,a11=mml2.retrieveFamilyIdsOnNodes()
+        self.assertTrue(a10.isEqual(DataArrayInt([1,1,1,1,1,1,2,2,2,1,3,4,2,2,1,3,4,2,2,1,3,3,1,1,1])))
+        self.assertTrue(a11) # no copy here
+        a12,a13=mml2.retrieveNumberIdsOnNodes()
+        self.assertTrue(a12.isEqual(DataArrayInt([0,10,20,30,40,50,60,70,80,90,100,110,120,130,140,150,160,170,180,190,200,210,220,230,240])))
+        self.assertTrue(a13) # no copy here
+        for i in xrange(1,2):
+            self.assertTrue((fcscp.isDataSetSupportEqualToThePreviousOne(i,fields)))
+            pass
+        for i in xrange(2):
+            f=allFMTSLeavesPerCommonSupport1[0][0][0][i]
+            fsst=MEDFileField1TSStructItem.BuildItemFrom(f,mst)
+            f.loadArraysIfNecessary()
+            v=mml.buildDataArray(fsst,fields,f.getUndergroundDataArray())
+            self.assertEqual(f.getName(),fieldName1)
+            self.assertEqual(v.getHiddenCppPointer(),f.getUndergroundDataArray().getHiddenCppPointer())
+            vExp=DataArrayDouble([0.7071067811865476,1.5811388300841898,2.5495097567963922,3.5355339059327378,1.5811388300841898,2.1213203435596424,2.9154759474226504,3.8078865529319543,2.5495097567963922,2.9154759474226504,3.5355339059327378,4.301162633521313,3.5355339059327378,3.8078865529319543,4.301162633521313,4.949747468305833])
+            if i==1: vExp.reverse()
+            vExp.setInfoOnComponents(["zeInfoCell"])
+            self.assertTrue(v.isEqual(vExp,1e-12))
+            #
+            f=allFMTSLeavesPerCommonSupport1[0][0][1][i]
+            fsst=MEDFileField1TSStructItem.BuildItemFrom(f,mst)
+            f.loadArraysIfNecessary()
+            v=mml.buildDataArray(fsst,fields,f.getUndergroundDataArray())
+            self.assertEqual(f.getName(),fieldName0)
+            self.assertEqual(v.getHiddenCppPointer(),f.getUndergroundDataArray().getHiddenCppPointer())
+            vExp=DataArrayDouble([0.,1.,2.,3.,4.,1.,1.4142135623730951,2.23606797749979,3.1622776601683795,4.123105625617661,2.,2.23606797749979,2.8284271247461903,3.605551275463989,4.47213595499958,3.,3.1622776601683795,3.605551275463989,4.242640687119285,5.,4.,4.123105625617661,4.47213595499958,5.,5.656854249492381])
+            if i==1: vExp.reverse()
+            vExp.setInfoOnComponents(["zeInfo"])
+            self.assertTrue(v.isEqual(vExp,1e-12))
+            pass
+        ### Testing the 2nd support
+        fcscp=allFMTSLeavesPerCommonSupport1[1][1]
+        mml=fcscp.buildFromScratchDataSetSupport(0,fields)
+        mml2=mml.prepare()
+        self.assertTrue(isinstance(mml2,MEDUMeshMultiLev))
+        ncc,a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        self.assertTrue(not ncc)
+        self.assertTrue(not ncc)
+        self.assertTrue(a0.isEqual(DataArrayDouble([0.,1.,0.,1.,1.,0.,2.,1.,0.,0.,2.,0.,1.,2.,0.,2.,2.,0.,0.,3.,0.,1.,3.,0.,2.,3.,0.,0.,4.,0.,1.,4.,0.,2.,4.,0.],12,3),1e-12))
+        self.assertTrue(a1.isEqual(DataArrayByte([9,9,9,9,9,9])))
+        self.assertTrue(a2.isEqual(DataArrayInt([0,5,10,15,20,25])))
+        self.assertTrue(a3.isEqual(DataArrayInt([4,1,0,3,4,4,2,1,4,5,4,4,3,6,7,4,5,4,7,8,4,7,6,9,10,4,8,7,10,11])))
+        self.assertTrue(a4 is None)
+        self.assertTrue(a5 is None)
+        a6,a7=mml2.retrieveFamilyIdsOnCells()
+        self.assertTrue(a6.isEqual(DataArrayInt([-6,-6,-7,-7,-5,-5])))
+        self.assertTrue(not a7) # copy here
+        a8,a9=mml2.retrieveNumberIdsOnCells()
+        self.assertTrue(a8.isEqual(DataArrayInt([44,55,88,99,132,143])))
+        self.assertTrue(not a9) # copy here
+        a10,a11=mml2.retrieveFamilyIdsOnNodes()
+        self.assertTrue(a10.isEqual(DataArrayInt([1,2,2,3,4,2,3,4,2,3,3,1])))
+        self.assertTrue(not a11) # copy here
+        a12,a13=mml2.retrieveNumberIdsOnNodes()
+        self.assertTrue(a12.isEqual(DataArrayInt([50,60,70,100,110,120,150,160,170,200,210,220])))
+        self.assertTrue(not a13) # copy here
+        for i in xrange(2):
+            f=allFMTSLeavesPerCommonSupport1[1][0][0][i]
+            fsst=MEDFileField1TSStructItem.BuildItemFrom(f,mst)
+            f.loadArraysIfNecessary()
+            v=mml.buildDataArray(fsst,fields,f.getUndergroundDataArray())
+            self.assertEqual(f.getName(),fieldName3)
+            self.assertEqual(v.getHiddenCppPointer(),f.getUndergroundDataArray().getHiddenCppPointer())
+            vExp=DataArrayDouble([1.5811388300842,2.1213203435596,2.5495097567964,2.9154759474227,3.5355339059327,3.807886552932])
+            if i==1: vExp.reverse()
+            vExp.setInfoOnComponents(["abcdefg"])
+            self.assertTrue(v.isEqual(vExp,1e-12))
+            #
+            f=allFMTSLeavesPerCommonSupport1[1][0][1][i]
+            fsst=MEDFileField1TSStructItem.BuildItemFrom(f,mst)
+            f.loadArraysIfNecessary()
+            v=mml.buildDataArray(fsst,fields,f.getUndergroundDataArray())
+            self.assertEqual(f.getName(),fieldName2)
+            self.assertEqual(v.getHiddenCppPointer(),f.getUndergroundDataArray().getHiddenCppPointer())
+            vExp=DataArrayDouble([1.,1.4142135623731,2.2360679774998,2.,2.2360679774998,2.8284271247462,3.,3.1622776601684,3.605551275464,4.,4.1231056256177,4.4721359549996])
+            if i==1: vExp.reverse()
+            vExp.setInfoOnComponents(["zzzz"])
+            self.assertTrue(v.isEqual(vExp,1e-12))
+            pass
+        pass
+
+    def test21(self):
+        """ Here the created MED file contains only a mesh. The aim here is to test capability of MEDReader to support no fields.
+        This test checks nothing but write a MED file to be used by MEDReader tests.
+        """
+        fname="ForMEDReader21.med"
+        mm=MEDFileUMesh()
+        #
+        m0=MEDCouplingCMesh("mesh") ; arr=DataArrayDouble(5) ; arr.iota() ; m0.setCoords(arr,arr) ; m0=m0.buildUnstructured()
+        mm.setMeshAtLevel(0,m0)
+        grp0=DataArrayInt([5,6,9,10]) ; grp0.setName("Inside2D")
+        grp1=DataArrayInt([0,1,2,3,4,7,8,11,12,13,14,15]) ; grp1.setName("Border2D")
+        grp2=DataArrayInt([2,3,6,7]) ; grp2.setName("LowerRight2D")
+        mm.setGroupsAtLevel(0,[grp0,grp1,grp2])
+        #
+        m1=MEDCouplingUMesh(m0.getName(),1) ; m1.setCoords(m0.getCoords()) ; m1.allocateCells()
+        for elt in [[0,1],[1,2],[2,3],[3,4],[4,9],[9,14],[14,19],[19,24],[24,23],[23,22],[22,21],[21,20],[20,15],[15,10],[10,5],[5,0],[2,7],[7,12],[12,17],[17,22],
+                    [10,11],[11,12],[12,13],[13,14]]:
+            m1.insertNextCell(NORM_SEG2,elt)
+            pass
+        mm.setMeshAtLevel(-1,m1)
+        grp4=DataArrayInt([0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15]) ; grp4.setName("Border1D")
+        grp5=DataArrayInt([16,17,18,19,20,21,22,23]) ; grp5.setName("Inside1D")
+        grp6=DataArrayInt([18,19,22,23]) ; grp6.setName("UpperRight1D")
+        mm.setGroupsAtLevel(-1,[grp4,grp5,grp6])
+        #
+        grp7=DataArrayInt([1,2,3,6,7,8,11,12,13,16,17,18,21,22,23]) ; grp7.setName("InsideYNode")
+        grp8=DataArrayInt([5,6,7,8,9,10,11,12,13,14,15,16,17,18,19]) ; grp8.setName("InsideXNode")
+        mm.setGroupsAtLevel(1,[grp7,grp8])
+        #
+        mm.write(fname,2)
+        pass
+
+    def test22(self):
+        """ Use case where a field on nodes (ANodeField) on a mesh defined both in meshdim 2 and meshdim 1.
+        The only possible geometrical support that suits the field is those with meshdim equal to 1 (-1 in relative).
+        """
+        fname="ForMEDReader22.med"
+        fieldName0="ANodeField"
+        mm=MEDFileUMesh()
+        coo=DataArrayDouble([(4.,3.),(7.,3.),(2.,5.),(6.,5.),(9.,5.),(4.,7.),(8.,7.),(3.,8.),(9.,8.)])
+        m0=MEDCouplingUMesh("mesh",2) ; m0.setCoords(coo) ; m0.allocateCells() ; m0.insertNextCell(NORM_TRI3,[2,3,0]) ; m0.insertNextCell(NORM_TRI3,[3,1,0]) ; m0.insertNextCell(NORM_TRI3,[3,4,1])
+        mm.setMeshAtLevel(0,m0)
+        m1=MEDCouplingUMesh("mesh",1) ; m1.setCoords(coo) ; m1.allocateCells() ; m1.insertNextCell(NORM_SEG2,[2,0]) ;  m1.insertNextCell(NORM_SEG2,[0,1]) ; m1.insertNextCell(NORM_SEG2,[1,4])
+        m1.insertNextCell(NORM_SEG2,[3,5]) ; m1.insertNextCell(NORM_SEG2,[5,7]) ; m1.insertNextCell(NORM_SEG2,[3,6]) ; m1.insertNextCell(NORM_SEG2,[6,8])
+        mm.setMeshAtLevel(-1,m1)
+        fs=MEDFileFields()
+        fmts0=MEDFileFieldMultiTS() ; fs.pushField(fmts0)
+        fmts0.setDtUnit("s")
+        #
+        t=(1.1,0,-2)
+        f0=MEDCouplingFieldDouble(ON_NODES) ; f0.setMesh(m1)
+        f0.setName(fieldName0) ; f0.setTime(*t)
+        da=DataArrayDouble(9) ; da.iota() ; da.setInfoOnComponents(["zeInfo"])
+        f0.setArray(da)
+        f0.checkCoherency()
+        f1ts=MEDFileField1TS()
+        f1ts.setFieldNoProfileSBT(f0)
+        fmts0.pushBackTimeStep(f1ts)
+        #
+        t=(2.1,1,-3)
+        f0=MEDCouplingFieldDouble(ON_NODES) ; f0.setMesh(m1)
+        f0.setName(fieldName0) ; f0.setTime(*t)
+        da=DataArrayDouble(9) ; da.iota() ; da.reverse() ; da.setInfoOnComponents(["zeInfo"])
+        f0.setArray(da)
+        f0.checkCoherency()
+        f1ts=MEDFileField1TS()
+        f1ts.setFieldNoProfileSBT(f0)
+        fmts0.pushBackTimeStep(f1ts)
+        #
+        mm.write(fname,2)
+        fs.write(fname,0)
+        ########## GO for reading in MEDReader,by not loading all. Mesh is fully loaded but not fields values
+        ms=MEDFileMeshes(fname)
+        fields=MEDFileFields(fname,False)
+        fields.removeFieldsWithoutAnyTimeStep()
+        fields_per_mesh=[fields.partOfThisLyingOnSpecifiedMeshName(meshName) for meshName in ms.getMeshesNames()]
+        allFMTSLeavesToDisplay=[]
+        for fields in fields_per_mesh:
+            allFMTSLeavesToDisplay2=[]
+            for fmts in fields:
+                allFMTSLeavesToDisplay2+=fmts.splitDiscretizations()
+                pass
+            allFMTSLeavesToDisplay.append(allFMTSLeavesToDisplay2)
+            pass
+        self.assertEqual(len(allFMTSLeavesToDisplay),1)
+        self.assertEqual(len(allFMTSLeavesToDisplay[0]),1)
+        allFMTSLeavesPerTimeSeries=MEDFileAnyTypeFieldMultiTS.SplitIntoCommonTimeSeries(sum(allFMTSLeavesToDisplay,[]))
+        self.assertEqual(len(allFMTSLeavesPerTimeSeries),1)
+        self.assertEqual(len(allFMTSLeavesPerTimeSeries[0]),1)
+        allFMTSLeavesPerCommonSupport1=MEDFileAnyTypeFieldMultiTS.SplitPerCommonSupport(allFMTSLeavesToDisplay[0],ms[ms.getMeshesNames()[0]])
+        self.assertEqual(len(allFMTSLeavesPerCommonSupport1),1)
+        self.assertEqual(len(allFMTSLeavesPerCommonSupport1[0][0]),1)
+        #
+        mst=MEDFileMeshStruct.New(ms[0])
+        #
+        fcscp=allFMTSLeavesPerCommonSupport1[0][1]
+        self.assertEqual([NORM_TRI3,NORM_SEG2],fcscp.getGeoTypesAt(0,ms[0]))#contains all cell types of underlying mesh because only nodes with no profiles
+        mml=fcscp.buildFromScratchDataSetSupport(0,fields)
+        mml2=mml.prepare()
+        self.assertTrue(isinstance(mml2,MEDUMeshMultiLev))
+        ncc,a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        self.assertTrue(not ncc)
+        self.assertTrue(a0.isEqual(DataArrayDouble([(4.,3.,0.),(7.,3.,0.),(2.,5.,0.),(6.,5.,0.),(9.,5.,0.),(4.,7.,0.),(8.,7.,0.),(3.,8.,0.),(9.,8.,0.)]),1e-12))
+        self.assertTrue(a1.isEqual(DataArrayByte([5,5,5,3,3,3,3,3,3,3])))
+        self.assertTrue(a2.isEqual(DataArrayInt([0,4,8,12,15,18,21,24,27,30])))
+        self.assertTrue(a3.isEqual(DataArrayInt([3,2,3,0,3,3,1,0,3,3,4,1,2,2,0,2,0,1,2,1,4,2,3,5,2,5,7,2,3,6,2,6,8])))
+        self.assertTrue(a4 is None)
+        self.assertTrue(a5 is None)
+        a6,a7=mml2.retrieveFamilyIdsOnCells()
+        self.assertTrue(a6.isEqual(DataArrayInt([0,0,0,0,0,0,0,0,0,0])))
+        self.assertTrue(not a7) # copy here
+        a8,a9=mml2.retrieveNumberIdsOnCells()
+        self.assertTrue(not a8)
+        self.assertTrue(a9) # nocopy here
+        a10,a11=mml2.retrieveFamilyIdsOnNodes()
+        self.assertTrue(not a10)
+        self.assertTrue(a11) # no copy here
+        a12,a13=mml2.retrieveNumberIdsOnNodes()
+        self.assertTrue(not a12)
+        self.assertTrue(a13) # no copy here
+        #
+        f=allFMTSLeavesPerCommonSupport1[0][0][0][0]
+        fsst=MEDFileField1TSStructItem.BuildItemFrom(f,mst)
+        f.loadArraysIfNecessary()
+        v=mml.buildDataArray(fsst,fields,f.getUndergroundDataArray())
+        self.assertEqual(f.getName(),fieldName0)
+        self.assertEqual(v.getHiddenCppPointer(),f.getUndergroundDataArray().getHiddenCppPointer())
+        vExp=DataArrayDouble(9) ; vExp.iota() ; vExp.setInfoOnComponents(["zeInfo"])
+        self.assertTrue(v.isEqual(vExp,1e-12))
+        #
+        f=allFMTSLeavesPerCommonSupport1[0][0][0][1]
+        fsst=MEDFileField1TSStructItem.BuildItemFrom(f,mst)
+        f.loadArraysIfNecessary()
+        v=mml.buildDataArray(fsst,fields,f.getUndergroundDataArray())
+        self.assertEqual(f.getName(),fieldName0)
+        self.assertEqual(v.getHiddenCppPointer(),f.getUndergroundDataArray().getHiddenCppPointer())
+        vExp=DataArrayDouble(9) ; vExp.iota() ; vExp.setInfoOnComponents(["zeInfo"]) ; vExp.reverse()
+        self.assertTrue(v.isEqual(vExp,1e-12))
+        pass 
+    
+    def test23(self):
+        """ Non regression test 2219 of modes. Idem than test22 except that here the node field is on profile.
+        """
+        fname="ForMEDReader23.med"
+        fieldName0="ANodeField"
+        mm=MEDFileUMesh()
+        coo=DataArrayDouble([(4.,3.),(7.,3.),(2.,5.),(6.,5.),(9.,5.),(4.,7.),(8.,7.),(3.,8.),(9.,8.)])
+        m0=MEDCouplingUMesh("mesh",2) ; m0.setCoords(coo) ; m0.allocateCells() ; m0.insertNextCell(NORM_TRI3,[2,3,0]) ; m0.insertNextCell(NORM_TRI3,[3,1,0]) ; m0.insertNextCell(NORM_TRI3,[3,4,1])
+        mm.setMeshAtLevel(0,m0)
+        m1=MEDCouplingUMesh("mesh",1) ; m1.setCoords(coo) ; m1.allocateCells() ; m1.insertNextCell(NORM_SEG2,[2,0]) ;  m1.insertNextCell(NORM_SEG2,[0,1]) ; m1.insertNextCell(NORM_SEG2,[1,4])
+        m1.insertNextCell(NORM_SEG2,[3,5]) ; m1.insertNextCell(NORM_SEG2,[5,7]) ; m1.insertNextCell(NORM_SEG2,[3,6]) ; m1.insertNextCell(NORM_SEG2,[6,8])
+        mm.setMeshAtLevel(-1,m1)
+        fmts0=MEDFileFieldMultiTS()
+        fmts0.setDtUnit("s")
+        #
+        pfl=DataArrayInt([0,1,2,4]) ; pfl.setName("pfl")
+        pflCell=DataArrayInt([0,1,2]) ; m1Part=m1[pflCell] ; m1Part.zipCoords()
+        #
+        t=(1.1,0,-2)
+        f0=MEDCouplingFieldDouble(ON_NODES) ; f0.setMesh(m1Part)
+        f0.setName(fieldName0) ; f0.setTime(*t)
+        da=DataArrayDouble(4) ; da.iota() ; da.setInfoOnComponents(["zeInfo"])
+        f0.setArray(da)
+        f0.checkCoherency()
+        f1ts=MEDFileField1TS()
+        f1ts.setFieldProfile(f0,mm,-1,pfl)
+        fmts0.pushBackTimeStep(f1ts)
+        #
+        t=(2.1,1,-3)
+        f0=MEDCouplingFieldDouble(ON_NODES) ; f0.setMesh(m1Part)
+        f0.setName(fieldName0) ; f0.setTime(*t)
+        da=DataArrayDouble(4) ; da.iota() ; da.reverse() ; da.setInfoOnComponents(["zeInfo"])
+        f0.setArray(da)
+        f0.checkCoherency()
+        f1ts=MEDFileField1TS()
+        f1ts.setFieldProfile(f0,mm,-1,pfl)
+        fmts0.pushBackTimeStep(f1ts)
+        mm.write(fname,2)
+        fmts0.write(fname,0)
+        ########## GO for reading in MEDReader,by not loading all. Mesh is fully loaded but not fields values
+        ms=MEDFileMeshes(fname)
+        fields=MEDFileFields(fname,False)
+        fields.removeFieldsWithoutAnyTimeStep()
+        fields_per_mesh=[fields.partOfThisLyingOnSpecifiedMeshName(meshName) for meshName in ms.getMeshesNames()]
+        allFMTSLeavesToDisplay=[]
+        for fields in fields_per_mesh:
+            allFMTSLeavesToDisplay2=[]
+            for fmts in fields:
+                allFMTSLeavesToDisplay2+=fmts.splitDiscretizations()
+                pass
+            allFMTSLeavesToDisplay.append(allFMTSLeavesToDisplay2)
+            pass
+        self.assertEqual(len(allFMTSLeavesToDisplay),1)
+        self.assertEqual(len(allFMTSLeavesToDisplay[0]),1)
+        allFMTSLeavesPerTimeSeries=MEDFileAnyTypeFieldMultiTS.SplitIntoCommonTimeSeries(sum(allFMTSLeavesToDisplay,[]))
+        self.assertEqual(len(allFMTSLeavesPerTimeSeries),1)
+        self.assertEqual(len(allFMTSLeavesPerTimeSeries[0]),1)
+        allFMTSLeavesPerCommonSupport1=MEDFileAnyTypeFieldMultiTS.SplitPerCommonSupport(allFMTSLeavesToDisplay[0],ms[ms.getMeshesNames()[0]])
+        self.assertEqual(len(allFMTSLeavesPerCommonSupport1),1)
+        self.assertEqual(len(allFMTSLeavesPerCommonSupport1[0][0]),1)
+        #
+        mst=MEDFileMeshStruct.New(ms[0])
+        #
+        fcscp=allFMTSLeavesPerCommonSupport1[0][1]
+        mml=fcscp.buildFromScratchDataSetSupport(0,fields)
+        mml2=mml.prepare()
+        self.assertTrue(isinstance(mml2,MEDUMeshMultiLev))
+        ncc,a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        self.assertTrue(not ncc)
+        self.assertTrue(a0.isEqual(DataArrayDouble([(4.,3.,0.),(7.,3.,0.),(2.,5.,0.),(9.,5.,0.)]),1e-12))
+        self.assertTrue(a1.isEqual(DataArrayByte([3,3,3])))
+        self.assertTrue(a2.isEqual(DataArrayInt([0,3,6])))
+        self.assertTrue(a3.isEqual(DataArrayInt([2,2,0,2,0,1,2,1,3])))
+        self.assertTrue(a4 is None)
+        self.assertTrue(a5 is None)
+        a6,a7=mml2.retrieveFamilyIdsOnCells()
+        self.assertTrue(a6.isEqual(DataArrayInt([0,0,0])))
+        self.assertTrue(not a7) # copy here
+        a8,a9=mml2.retrieveNumberIdsOnCells()
+        self.assertTrue(not a8)
+        self.assertTrue(a9) # nocopy here
+        a10,a11=mml2.retrieveFamilyIdsOnNodes()
+        self.assertTrue(not a10)
+        self.assertTrue(a11) # no copy here
+        a12,a13=mml2.retrieveNumberIdsOnNodes()
+        self.assertTrue(not a12)
+        self.assertTrue(a13) # no copy here
+        #
+        f=allFMTSLeavesPerCommonSupport1[0][0][0][0]
+        fsst=MEDFileField1TSStructItem.BuildItemFrom(f,mst)
+        f.loadArraysIfNecessary()
+        v=mml.buildDataArray(fsst,fields,f.getUndergroundDataArray())
+        self.assertEqual(f.getName(),fieldName0)
+        vExp=DataArrayDouble(4) ; vExp.iota() ; vExp.setInfoOnComponents(["zeInfo"])
+        self.assertTrue(v.isEqual(vExp,1e-12))
+        #
+        f=allFMTSLeavesPerCommonSupport1[0][0][0][1]
+        fsst=MEDFileField1TSStructItem.BuildItemFrom(f,mst)
+        f.loadArraysIfNecessary()
+        v=mml.buildDataArray(fsst,fields,f.getUndergroundDataArray())
+        self.assertEqual(f.getName(),fieldName0)
+        vExp=DataArrayDouble(4) ; vExp.iota() ; vExp.setInfoOnComponents(["zeInfo"]) ; vExp.reverse()
+        self.assertTrue(v.isEqual(vExp,1e-12))
+        pass
+
+    def test24(self):
+        """ Non regression test for cartesian mesh whose the 3rd direction has only one node. It a false 3D mesh.
+        """
+        fname="ForMEDReader24.med"
+        fieldName0="zeFieldNode"
+        cmesh=MEDCouplingCMesh("mesh")
+        arr0=DataArrayDouble([0.,1.1,2.2,3.3,4.4])
+        arr1=DataArrayDouble([0.,1.4,2.3])
+        arr2=DataArrayDouble([5.])
+        cmesh.setCoords(arr0,arr1,arr2)
+        fmts0=MEDFileFieldMultiTS()
+        fmts0.setDtUnit("s")
+        #
+        t=(1.1,2,3)
+        f=MEDCouplingFieldDouble(ON_NODES) ; f.setName(fieldName0)
+        f.setMesh(cmesh)
+        arr=DataArrayDouble(15) ; arr.setInfoOnComponents(["tutu"]) ; arr.iota()
+        f.setArray(arr)
+        f.setTime(*t)
+        f1ts=MEDFileField1TS()
+        f1ts.setFieldNoProfileSBT(f)
+        fmts0.pushBackTimeStep(f1ts)
+        #
+        t=(3.3,4,5)
+        arr=DataArrayDouble(15) ; arr.setInfoOnComponents(["tutu"]) ; arr.iota()
+        arr.reverse()
+        f.setArray(arr)
+        f.setTime(*t)
+        f1ts=MEDFileField1TS()
+        f1ts.setFieldNoProfileSBT(f)
+        fmts0.pushBackTimeStep(f1ts)
+        #
+        mm=MEDFileCMesh() ; mm.setMesh(cmesh)
+        mm.write(fname,2)
+        fmts0.write(fname,0)
+        ########## GO for reading in MEDReader,by not loading all. Mesh is fully loaded but not fields values
+        ms=MEDFileMeshes(fname)
+        fields=MEDFileFields(fname,False)
+        fields.removeFieldsWithoutAnyTimeStep()
+        fields_per_mesh=[fields.partOfThisLyingOnSpecifiedMeshName(meshName) for meshName in ms.getMeshesNames()]
+        allFMTSLeavesToDisplay=[]
+        for fields in fields_per_mesh:
+            allFMTSLeavesToDisplay2=[]
+            for fmts in fields:
+                allFMTSLeavesToDisplay2+=fmts.splitDiscretizations()
+                pass
+            allFMTSLeavesToDisplay.append(allFMTSLeavesToDisplay2)
+            pass
+        self.assertEqual(len(allFMTSLeavesToDisplay),1)
+        self.assertEqual(len(allFMTSLeavesToDisplay[0]),1)
+        allFMTSLeavesPerTimeSeries=MEDFileAnyTypeFieldMultiTS.SplitIntoCommonTimeSeries(sum(allFMTSLeavesToDisplay,[]))
+        self.assertEqual(len(allFMTSLeavesPerTimeSeries),1)
+        self.assertEqual(len(allFMTSLeavesPerTimeSeries[0]),1)
+        allFMTSLeavesPerCommonSupport=MEDFileAnyTypeFieldMultiTS.SplitPerCommonSupport(allFMTSLeavesToDisplay[0],ms[ms.getMeshesNames()[0]])
+        self.assertEqual(len(allFMTSLeavesPerCommonSupport),1)
+        self.assertEqual(len(allFMTSLeavesPerCommonSupport[0][0]),1)
+        #
+        mst=MEDFileMeshStruct.New(ms[0])
+        #
+        fcscp=allFMTSLeavesPerCommonSupport[0][1]
+        mml=fcscp.buildFromScratchDataSetSupport(0,fields)
+        mml2=mml.prepare()
+        self.assertTrue(isinstance(mml2,MEDCMeshMultiLev))
+        (a,b,c),d=mml2.buildVTUArrays()
+        self.assertTrue(d)#d is True because the a,b and c are directly those in the internal data structure
+        self.assertTrue(a.isEqual(arr0,1e-12))
+        self.assertTrue(b.isEqual(arr1,1e-12))
+        self.assertTrue(c.isEqual(arr2,1e-12))
+        for i in xrange(2):
+            f=allFMTSLeavesPerCommonSupport[0][0][0][i]
+            fsst=MEDFileField1TSStructItem.BuildItemFrom(f,mst)
+            f.loadArraysIfNecessary()
+            v=mml.buildDataArray(fsst,fields,f.getUndergroundDataArray())
+            self.assertEqual(f.getName(),fieldName0)
+            self.assertEqual(v.getHiddenCppPointer(),f.getUndergroundDataArray().getHiddenCppPointer())
+            vExp=DataArrayDouble(15) ; vExp.iota(0) ; vExp.setInfoOnComponents(["tutu"])
+            if i==1:
+                vExp.reverse()
+                pass
+            self.assertTrue(v.isEqual(vExp,1e-12))
+            pass
+        pass
+
+    def test25(self):
+        """ A tricky test that reproduces an invalid behaviour
+        Here a same field is defined both on CELLS and GAUSS_PT, with a profile for each.
+        The problem appears on array computation when performing CELLS then GAUSS_PT and CELLS again.
+        """
+        fname="ForMEDReader25.med"
+        m=MEDFileUMesh()
+        coords=DataArrayDouble([0.,0.,1.,0.,2.,0.,0.,1.,1.,1.,2.,1.,0.,2.,1.,2.,2.,2.,0.,3.,1.,3.,2.,3.,1.,4.,1.,5.,1.,6.],15,2)
+        m0=MEDCouplingUMesh("mesh",2) ; m0.setCoords(coords)
+        m0.allocateCells()
+        m0.insertNextCell(NORM_QUAD4,[0,3,4,1])
+        m0.insertNextCell(NORM_QUAD4,[1,4,5,2])
+        m0.insertNextCell(NORM_QUAD4,[3,6,7,4])
+        m0.insertNextCell(NORM_QUAD4,[4,7,8,5])
+        m0.insertNextCell(NORM_QUAD4,[6,9,10,7])
+        m0.insertNextCell(NORM_QUAD4,[7,10,11,8])
+        m.setMeshAtLevel(0,m0)
+        m1=MEDCouplingUMesh("mesh",1) ; m1.setCoords(coords)
+        m1.allocateCells()
+        m1.insertNextCell(NORM_SEG2,[10,12])
+        m1.insertNextCell(NORM_SEG2,[12,13])
+        m1.insertNextCell(NORM_SEG2,[13,14])
+        m.setMeshAtLevel(-1,m1)
+        m.setFamilyFieldArr(0,DataArrayInt([-1,-2,-3,-4,-5,-6]))
+        m.setFamilyFieldArr(-1,DataArrayInt([-7,-8,-9]))
+        m.setFamilyFieldArr(1,DataArrayInt([3,4,5,6,7,8,9,10,11,12,13,14,15,16,17]))
+        m.setRenumFieldArr(0,DataArrayInt([101,102,103,104,105,106]))
+        m.setRenumFieldArr(-1,DataArrayInt([107,108,109]))
+        m.setRenumFieldArr(1,DataArrayInt([203,204,205,206,207,208,209,210,211,212,213,214,215,216,217]))
+        #
+        fmts=MEDFileFieldMultiTS()
+        info0=["aa","bbb"]
+        name0="zeField"
+        pflName0="pfl"
+        pflName1="pfl2"
+        #
+        f1ts=MEDFileField1TS()
+        f=MEDCouplingFieldDouble(ON_CELLS) ; f.setName(name0)
+        arr=DataArrayDouble([(-1,-11),(-2,-22)]) ; arr.setInfoOnComponents(info0)
+        f.setArray(arr)
+        pfl0=DataArrayInt([0,1]) ; pfl0.setName(pflName0)
+        f1ts.setFieldProfile(f,m,-1,pfl0)
+        del f
+        f2=MEDCouplingFieldDouble(ON_GAUSS_PT) ; f2.setName(name0)
+        arr=DataArrayDouble(15) ; arr.iota(1)
+        arr=DataArrayDouble.Meld(arr,arr+10) ; arr.setInfoOnComponents(info0)
+        f2.setArray(arr)
+        pfl1=DataArrayInt([1,3,5]) ; pfl1.setName(pflName1)
+        tmp=m0[pfl1] ; f2.setMesh(tmp)
+        f2.setGaussLocalizationOnType(NORM_QUAD4,[-1.,-1.,1.,-1.,1.,1.,-1.,1.],[-0.5,-0.5,0.5,-0.5,0.5,0.5,-0.5,0.5,0.,0.],[0.1,0.1,0.1,0.1,0.6])
+        f2.checkCoherency()
+        f1ts.setFieldProfile(f2,m,0,pfl1)
+        fmts.pushBackTimeStep(f1ts)
+        #
+        m.write(fname,2)
+        fmts.write(fname,0)
+        ########## GO for reading in MEDReader,by not loading all. Mesh is fully loaded but not fields values
+        ms=MEDFileMeshes(fname)
+        fields=MEDFileFields(fname,False) # false is absolutely necessary for the test
+        fields.removeFieldsWithoutAnyTimeStep()
+        fields_per_mesh=[fields.partOfThisLyingOnSpecifiedMeshName(meshName) for meshName in ms.getMeshesNames()]
+        allFMTSLeavesToDisplay=[]
+        for fields in fields_per_mesh:
+            allFMTSLeavesToDisplay2=[]
+            for fmts in fields:
+                allFMTSLeavesToDisplay2+=fmts.splitDiscretizations()
+                pass
+            allFMTSLeavesToDisplay.append(allFMTSLeavesToDisplay2)
+            pass
+        self.assertEqual(len(allFMTSLeavesToDisplay),1)
+        self.assertEqual(len(allFMTSLeavesToDisplay[0]),2)
+        ### here the test is important !!! Pointers must be different !
+        self.assertTrue(allFMTSLeavesToDisplay[0][0][0].getUndergroundDataArray().getHiddenCppPointer()!=allFMTSLeavesToDisplay[0][1][0].getUndergroundDataArray().getHiddenCppPointer())
+        allFMTSLeavesPerTimeSeries=MEDFileAnyTypeFieldMultiTS.SplitIntoCommonTimeSeries(sum(allFMTSLeavesToDisplay,[]))
+        self.assertEqual(len(allFMTSLeavesPerTimeSeries),1)
+        self.assertEqual(len(allFMTSLeavesPerTimeSeries[0]),2)
+        ### here the test is important !!! Pointers must be different !
+        self.assertTrue(allFMTSLeavesToDisplay[0][0][0].getUndergroundDataArray().getHiddenCppPointer()!=allFMTSLeavesToDisplay[0][1][0].getUndergroundDataArray().getHiddenCppPointer())
+        allFMTSLeavesPerCommonSupport1=MEDFileAnyTypeFieldMultiTS.SplitPerCommonSupport(allFMTSLeavesToDisplay[0],ms[ms.getMeshesNames()[0]])
+        self.assertTrue(allFMTSLeavesToDisplay[0][0][0].getUndergroundDataArray().getHiddenCppPointer()!=allFMTSLeavesToDisplay[0][1][0].getUndergroundDataArray().getHiddenCppPointer())
+        self.assertEqual(len(allFMTSLeavesPerCommonSupport1),2)
+        self.assertEqual(len(allFMTSLeavesPerCommonSupport1[0][0]),1)
+        self.assertEqual(len(allFMTSLeavesPerCommonSupport1[1][0]),1)
+        #
+        mst=MEDFileMeshStruct.New(ms[0])
+        # emulate first click
+        fcscp=allFMTSLeavesPerCommonSupport1[0][1]
+        self.assertEqual([NORM_SEG2],fcscp.getGeoTypesAt(0,ms[0]))
+        mml=fcscp.buildFromScratchDataSetSupport(0,fields)
+        mml2=mml.prepare()
+        self.assertTrue(isinstance(mml2,MEDUMeshMultiLev))
+        ncc,a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        self.assertTrue(not ncc) # copy here because 2D -> 3D
+        expCoords=coords.changeNbOfComponents(3,0.)
+        self.assertTrue(a0.isEqual(expCoords,1e-12))
+        self.assertTrue(a1.isEqual(DataArrayByte([3,3])))
+        self.assertTrue(a2.isEqual(DataArrayInt([0,3])))
+        self.assertTrue(a3.isEqual(DataArrayInt([2,10,12,2,12,13])))
+        self.assertTrue(a4 is None)
+        self.assertTrue(a5 is None)
+        a6,a7=mml2.retrieveFamilyIdsOnCells()
+        self.assertTrue(a6.isEqual(DataArrayInt([-7,-8])))
+        self.assertTrue(not a7) # copy here because profile on cells
+        a8,a9=mml2.retrieveNumberIdsOnCells()
+        self.assertTrue(a8.isEqual(DataArrayInt([107,108])))
+        self.assertTrue(not a9) # copy here because profile on cells
+        a10,a11=mml2.retrieveFamilyIdsOnNodes()
+        self.assertTrue(a10.isEqual(DataArrayInt([3,4,5,6,7,8,9,10,11,12,13,14,15,16,17])))
+        self.assertTrue(a11) # no copy here
+        a12,a13=mml2.retrieveNumberIdsOnNodes()
+        self.assertTrue(a12.isEqual(DataArrayInt([203,204,205,206,207,208,209,210,211,212,213,214,215,216,217])))
+        self.assertTrue(a13) # no copy here
+        fff0=allFMTSLeavesPerCommonSupport1[0][0][0][0]
+        fsst=MEDFileField1TSStructItem.BuildItemFrom(fff0,mst)
+        fff0.loadArraysIfNecessary()
+        self.assertEqual([ON_CELLS],fff0.getTypesOfFieldAvailable())
+        v=mml.buildDataArray(fsst,fields,fff0.getUndergroundDataArray())
+        self.assertEqual(fff0.getName(),name0)
+        self.assertEqual(v.getHiddenCppPointer(),fff0.getUndergroundDataArray().getHiddenCppPointer())
+        vExp=DataArrayDouble([(-1,-11),(-2,-22)]) ; vExp.setInfoOnComponents(info0)
+        self.assertTrue(v.isEqual(vExp,1e-12))
+        del fff0
+        # emulate second click
+        fcscp=allFMTSLeavesPerCommonSupport1[1][1]
+        self.assertEqual([NORM_QUAD4],fcscp.getGeoTypesAt(0,ms[0]))
+        mml=fcscp.buildFromScratchDataSetSupport(0,fields)
+        mml2=mml.prepare()
+        self.assertTrue(isinstance(mml2,MEDUMeshMultiLev))
+        ncc,a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        self.assertTrue(not ncc) # copy here because 2D -> 3D
+        expCoords=coords.changeNbOfComponents(3,0.)
+        self.assertTrue(a0.isEqual(expCoords,1e-12))
+        self.assertTrue(a1.isEqual(DataArrayByte([9,9,9])))
+        self.assertTrue(a2.isEqual(DataArrayInt([0,5,10])))
+        self.assertTrue(a3.isEqual(DataArrayInt([4,1,4,5,2,4,4,7,8,5,4,7,10,11,8])))
+        self.assertTrue(a4 is None)
+        self.assertTrue(a5 is None)
+        a6,a7=mml2.retrieveFamilyIdsOnCells()
+        self.assertTrue(a6.isEqual(DataArrayInt([-2,-4,-6])))
+        self.assertTrue(not a7) # copy here because profile on cells
+        a8,a9=mml2.retrieveNumberIdsOnCells()
+        self.assertTrue(a8.isEqual(DataArrayInt([102,104,106])))
+        self.assertTrue(not a9) # copy here because profile on cells
+        a10,a11=mml2.retrieveFamilyIdsOnNodes()
+        self.assertTrue(a10.isEqual(DataArrayInt([3,4,5,6,7,8,9,10,11,12,13,14,15,16,17])))
+        self.assertTrue(a11) # no copy here
+        a12,a13=mml2.retrieveNumberIdsOnNodes()
+        self.assertTrue(a12.isEqual(DataArrayInt([203,204,205,206,207,208,209,210,211,212,213,214,215,216,217])))
+        self.assertTrue(a13) # no copy here
+        fff1=allFMTSLeavesPerCommonSupport1[1][0][0][0]
+        fsst=MEDFileField1TSStructItem.BuildItemFrom(fff1,mst)
+        fff1.loadArraysIfNecessary()
+        self.assertEqual([ON_GAUSS_PT],fff1.getTypesOfFieldAvailable())
+        v=mml.buildDataArray(fsst,fields,fff1.getUndergroundDataArray())
+        self.assertEqual(fff1.getName(),name0)
+        self.assertEqual(v.getHiddenCppPointer(),fff1.getUndergroundDataArray().getHiddenCppPointer())
+        vExp=DataArrayDouble([1.,11.,2.,12.,3.,13.,4.,14.,5.,15.,6.,16.,7.,17.,8.,18.,9.,19.,10.,20.,11.,21.,12.,22.,13.,23.,14.,24.,15.,25.],15,2) ; vExp.setInfoOnComponents(info0)
+        self.assertTrue(v.isEqual(vExp,1e-12))
+        # emulate third click
+        fcscp=allFMTSLeavesPerCommonSupport1[0][1]
+        mml=fcscp.buildFromScratchDataSetSupport(0,fields)
+        mml2=mml.prepare()
+        self.assertTrue(isinstance(mml2,MEDUMeshMultiLev))
+        ncc,a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        self.assertTrue(not ncc) # copy here because 2D -> 3D
+        expCoords=coords.changeNbOfComponents(3,0.)
+        self.assertTrue(a0.isEqual(expCoords,1e-12))
+        self.assertTrue(a1.isEqual(DataArrayByte([3,3])))
+        self.assertTrue(a2.isEqual(DataArrayInt([0,3])))
+        self.assertTrue(a3.isEqual(DataArrayInt([2,10,12,2,12,13])))
+        self.assertTrue(a4 is None)
+        self.assertTrue(a5 is None)
+        a6,a7=mml2.retrieveFamilyIdsOnCells()
+        self.assertTrue(a6.isEqual(DataArrayInt([-7,-8])))
+        self.assertTrue(not a7) # copy here because profile on cells
+        a8,a9=mml2.retrieveNumberIdsOnCells()
+        self.assertTrue(a8.isEqual(DataArrayInt([107,108])))
+        self.assertTrue(not a9) # copy here because profile on cells
+        a10,a11=mml2.retrieveFamilyIdsOnNodes()
+        self.assertTrue(a10.isEqual(DataArrayInt([3,4,5,6,7,8,9,10,11,12,13,14,15,16,17])))
+        self.assertTrue(a11) # no copy here
+        a12,a13=mml2.retrieveNumberIdsOnNodes()
+        self.assertTrue(a12.isEqual(DataArrayInt([203,204,205,206,207,208,209,210,211,212,213,214,215,216,217])))
+        self.assertTrue(a13) # no copy here
+        fff0=allFMTSLeavesPerCommonSupport1[0][0][0][0]
+        fsst=MEDFileField1TSStructItem.BuildItemFrom(fff0,mst)
+        fff0.loadArraysIfNecessary()
+        self.assertEqual([ON_CELLS],fff0.getTypesOfFieldAvailable())
+        v=mml.buildDataArray(fsst,fields,fff0.getUndergroundDataArray())
+        self.assertEqual(fff0.getName(),name0)
+        self.assertEqual(v.getHiddenCppPointer(),fff0.getUndergroundDataArray().getHiddenCppPointer())
+        vExp=DataArrayDouble([(-1,-11),(-2,-22)]) ; vExp.setInfoOnComponents(info0)
+        self.assertTrue(v.isEqual(vExp,1e-12)) # <- THE test is here !!!
+        del fff0
+        pass
+
+    def test26(self):
+        """ Test focused on field on nodes (here f0Node and f1Node) lying on a profile of nodes that do not match perfectly a sub set of cells of its underlying mesh. See bug EDF 2405 and 2177.
+        For this type of fields the support will contain only vertices.
+        """
+        fname="ForMEDReader26.med"
+        coords=DataArrayDouble([(0.,0.,0.),(1.,0.,0.),(2.,0.,0.),(3.,0.,0.),(0.,1.,0.),(1.,1.,0.),(2.,1.,0.),(3.,1.,0.),(0.,2.,0.),(1.,2.,0.),(2.,2.,0.),(3.,2.,0.),(0.,3.,0.),(1.,3.,0.),(2.,3.,0.),(3.,3.,0.)])
+        m0=MEDCouplingUMesh("mesh",2)
+        m0.allocateCells()
+        for elt in [[2,6,3],[6,7,3],[9,6,5],[9,10,6]]:
+            m0.insertNextCell(NORM_TRI3,elt)
+            pass
+        for elt in [[0,4,5,1],[1,5,6,2],[4,8,9,5],[6,10,11,7],[8,12,13,9],[9,13,14,10],[10,14,15,11]]:
+            m0.insertNextCell(NORM_QUAD4,elt)
+            pass
+        m0.setCoords(coords)
+        ##
+        mm=MEDFileUMesh()
+        mm.setMeshAtLevel(0,m0)
+        mm.setFamilyFieldArr(0,DataArrayInt([-1,-2,-3,-4,-5,-6,-7,-8,-9,-10,-11]))
+        mm.setFamilyFieldArr(1,DataArrayInt([1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16]))
+        #
+        f1ts0Node=MEDFileField1TS()
+        f1ts1Node=MEDFileField1TS()
+        f1ts2Cell=MEDFileField1TS()
+        f1ts3Cell=MEDFileField1TS()
+        f1ts4Cell=MEDFileField1TS()
+        f1ts5Node=MEDFileField1TS()
+        #
+        pfl0=DataArrayInt([4,5,6,8,9,12]) ; pfl0.setName("pfl0")
+        pfl1=DataArrayInt([0,1,4,5,7,10]) ; pfl1.setName("pfl1")
+        pfl2=DataArrayInt([0,1,2,3,4,5,6,7,10,11,14,15]) ; pfl2.setName("pfl2")
+        #
+        f0Node=MEDCouplingFieldDouble(ON_NODES) ; f0Node.setName("f0Node")
+        arr0=DataArrayDouble(6) ; arr0.iota()
+        f0Node.setArray(arr0)
+        f1ts0Node.setFieldProfile(f0Node,mm,0,pfl0)
+        #
+        f1Node=MEDCouplingFieldDouble(ON_NODES) ; f1Node.setName("f1Node")
+        arr1=DataArrayDouble(6) ; arr1.iota() ; arr1.reverse()
+        f1Node.setArray(arr1)
+        f1ts1Node.setFieldProfile(f1Node,mm,0,pfl0)
+        #
+        f2Cell=MEDCouplingFieldDouble(ON_CELLS) ; f2Cell.setName("f2Cell")
+        arr2=DataArrayDouble([2,3,0,1,4,5])
+        f2Cell.setArray(arr2)
+        f1ts2Cell.setFieldProfile(f2Cell,mm,0,pfl1)
+        #
+        f3Cell=MEDCouplingFieldDouble(ON_CELLS) ; f3Cell.setName("f3Cell")
+        arr3=DataArrayDouble([5,4,3,2,1,0])
+        f3Cell.setArray(arr3)
+        f1ts3Cell.setFieldProfile(f3Cell,mm,0,pfl1)
+        #
+        f4Cell=MEDCouplingFieldDouble(ON_CELLS) ; f4Cell.setName("f4Cell")
+        arr4=DataArrayDouble([2,2,0,1,1,0])
+        f4Cell.setArray(arr4)
+        f1ts4Cell.setFieldProfile(f4Cell,mm,0,pfl1)
+        #
+        f5Node=MEDCouplingFieldDouble(ON_NODES) ; f5Node.setName("f5Node")
+        arr5=DataArrayDouble([0,1,2,3,10,11,13,2,11,1,10,0])
+        f5Node.setArray(arr5)
+        f1ts5Node.setFieldProfile(f5Node,mm,0,pfl2)
+        #
+        fs=MEDFileFields()
+        for f in [f1ts0Node,f1ts1Node,f1ts2Cell,f1ts3Cell,f1ts4Cell,f1ts5Node]:
+            fmts=MEDFileFieldMultiTS()
+            fmts.pushBackTimeStep(f)
+            fs.pushField(fmts)
+            pass
+        mm.write(fname,2)
+        fs.write(fname,0)
+        ########## GO for reading in MEDReader,by not loading all. Mesh is fully loaded but not fields values
+        ms=MEDFileMeshes(fname)
+        fields=MEDFileFields(fname,False)
+        fields.removeFieldsWithoutAnyTimeStep()
+        fields_per_mesh=[fields.partOfThisLyingOnSpecifiedMeshName(meshName) for meshName in ms.getMeshesNames()]
+        allFMTSLeavesToDisplay=[]
+        for fields in fields_per_mesh:
+            allFMTSLeavesToDisplay2=[]
+            for fmts in fields:
+                allFMTSLeavesToDisplay2+=fmts.splitDiscretizations()
+                pass
+            allFMTSLeavesToDisplay.append(allFMTSLeavesToDisplay2)
+            pass
+        self.assertEqual(len(allFMTSLeavesToDisplay),1)
+        self.assertEqual(len(allFMTSLeavesToDisplay[0]),6)
+        allFMTSLeavesPerTimeSeries=MEDFileAnyTypeFieldMultiTS.SplitIntoCommonTimeSeries(sum(allFMTSLeavesToDisplay,[]))
+        self.assertEqual(len(allFMTSLeavesPerTimeSeries),1)
+        self.assertEqual(len(allFMTSLeavesPerTimeSeries[0]),6)
+        allFMTSLeavesPerCommonSupport1=MEDFileAnyTypeFieldMultiTS.SplitPerCommonSupport(allFMTSLeavesToDisplay[0],ms[ms.getMeshesNames()[0]])
+        self.assertEqual(len(allFMTSLeavesPerCommonSupport1),2)
+        self.assertEqual(len(allFMTSLeavesPerCommonSupport1[0][0]),4)
+        self.assertEqual(len(allFMTSLeavesPerCommonSupport1[1][0]),2)# <- the smart one is here
+        #
+        mst=MEDFileMeshStruct.New(ms[0])
+        #
+        fcscp=allFMTSLeavesPerCommonSupport1[1][1]
+        mml=fcscp.buildFromScratchDataSetSupport(0,fields)
+        mml2=mml.prepare()
+        self.assertTrue(isinstance(mml2,MEDUMeshMultiLev))
+        self.assertEqual([3,4,0],mml2.getGeoTypes())
+        ncc,a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        self.assertTrue(not ncc)
+        self.assertTrue(a0.isEqual(DataArrayDouble([0.,1.,0.,1.,1.,0.,2.,1.,0.,0.,2.,0.,1.,2.,0.,0.,3.,0.],6,3),1e-12))
+        self.assertTrue(a1.isEqual(DataArrayByte([5,9,1])))
+        self.assertTrue(a2.isEqual(DataArrayInt([0,4,9])))
+        self.assertTrue(a3.isEqual(DataArrayInt([3,4,2,1,4,0,3,4,1,1,5])))
+        self.assertTrue(a4 is None)
+        self.assertTrue(a5 is None)
+        a6,a7=mml2.retrieveFamilyIdsOnCells()
+        self.assertTrue(a6.isEqual(DataArrayInt([-3,-7,13])))
+        self.assertTrue(not a7) # copy here because profile on cells
+        a8,a9=mml2.retrieveNumberIdsOnCells()
+        self.assertTrue(a8 is None)
+        self.assertTrue(a9) # no copy here because no number field
+        a10,a11=mml2.retrieveFamilyIdsOnNodes()
+        self.assertTrue(a10.isEqual(DataArrayInt([5,6,7,9,10,13])))
+        self.assertTrue(not a11) # copy here
+        a12,a13=mml2.retrieveNumberIdsOnNodes()
+        self.assertTrue(a12 is None)
+        self.assertTrue(a13) # no copy here because no number field
+        #
+        fff0=allFMTSLeavesPerCommonSupport1[1][0][0][0]
+        fsst=MEDFileField1TSStructItem.BuildItemFrom(fff0,mst)
+        fff0.loadArraysIfNecessary()
+        v=mml2.buildDataArray(fsst,fields,fff0.getUndergroundDataArray())
+        self.assertEqual(fff0.getName(),"f0Node")
+        self.assertEqual(v.getHiddenCppPointer(),fff0.getUndergroundDataArray().getHiddenCppPointer())
+        vExp=DataArrayDouble([0.,1.,2.,3.,4.,5.])
+        self.assertTrue(v.isEqual(vExp,1e-12)) # <- THE test is here !!!
+        #
+        fff1=allFMTSLeavesPerCommonSupport1[1][0][1][0]
+        fsst=MEDFileField1TSStructItem.BuildItemFrom(fff1,mst)
+        fff1.loadArraysIfNecessary()
+        v=mml2.buildDataArray(fsst,fields,fff1.getUndergroundDataArray())
+        self.assertEqual(fff1.getName(),"f1Node")
+        self.assertEqual(v.getHiddenCppPointer(),fff1.getUndergroundDataArray().getHiddenCppPointer())
+        vExp=DataArrayDouble([5.,4.,3.,2.,1.,0.])
+        self.assertTrue(v.isEqual(vExp,1e-12)) # <- THE test is here !!!
+        pass
+
+    def test27(self):
+        """ This test defines 2 fields f0 and f1 on nodes lying on an unstructured mesh with no cells.
+        f0 is a field on all nodes. f1 is a partial field on nodes.
+        """
+        fname="ForMEDReader27.med"
+        coords=DataArrayDouble([(0.,0.,0.),(1.,0.,0.),(2.,0.,0.),(3.,0.,0.),(0.,1.,0.),(1.,1.,0.),(2.,1.,0.),(3.,1.,0.),(0.,2.,0.),(1.,2.,0.),(2.,2.,0.),(3.,2.,0.),(0.,3.,0.),(1.,3.,0.),(2.,3.,0.),(3.,3.,0.)])
+        m0=MEDCouplingUMesh("mesh",2)
+        m0.allocateCells()
+        m0.setCoords(coords)
+        ##
+        mm=MEDFileUMesh()
+        mm.setMeshAtLevel(0,m0)
+        mm.setFamilyFieldArr(1,DataArrayInt([1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16]))
+        #
+        f1ts0=MEDFileField1TS()
+        f1ts1=MEDFileField1TS()
+        #
+        f0=MEDCouplingFieldDouble(ON_NODES) ; f0.setMesh(m0) ; f0.setName("f0NoPfl")
+        arr0=DataArrayDouble([0.,1.,2.,3.,1.,1.5,2.2,3.1,2.,2.2,3.,3.1,3.,3.1,3.5,4.])
+        f0.setArray(arr0)
+        f0.checkCoherency()
+        f1ts0.setFieldNoProfileSBT(f0)
+        self.assertEqual(f1ts0.getMeshName(),"mesh")
+        #
+        pfl1=DataArrayInt([0,1,2,3,4,5,6,8,9,12]) ; pfl1.setName("pfl1")
+        f1=MEDCouplingFieldDouble(ON_NODES) ; f1.setName("f1Pfl")
+        arr1=DataArrayDouble([3.,2.,1.,0.,2.,1.5,0.,1.,0.,0.2])
+        f1.setArray(arr1)
+        f1ts1.setFieldProfile(f1,mm,0,pfl1)
+        self.assertEqual(f1ts1.getMeshName(),"mesh")
+        #
+        fs=MEDFileFields()
+        fmts0=MEDFileFieldMultiTS()
+        fmts0.pushBackTimeStep(f1ts0)
+        fmts1=MEDFileFieldMultiTS()
+        fmts1.pushBackTimeStep(f1ts1)
+        fs.pushField(fmts0) ; fs.pushField(fmts1)
+        self.assertEqual(fs[0].getMeshName(),"mesh")
+        self.assertEqual(fs[1].getMeshName(),"mesh")
+        mm.write(fname,2)
+        fs.write(fname,0)
+        ########## GO for reading in MEDReader,by not loading all. Mesh is fully loaded but not fields values
+        ms=MEDFileMeshes(fname)
+        fields=MEDFileFields(fname,False)
+        fields.removeFieldsWithoutAnyTimeStep()
+        self.assertEqual(fields[0].getMeshName(),"mesh")
+        self.assertEqual(fields[1].getMeshName(),"mesh")
+        fields_per_mesh=[fields.partOfThisLyingOnSpecifiedMeshName(meshName) for meshName in ms.getMeshesNames()]
+        self.assertEqual(fields_per_mesh[0][0].getMeshName(),"mesh")
+        self.assertEqual(fields_per_mesh[0][1].getMeshName(),"mesh")
+        allFMTSLeavesToDisplay=[]
+        for fields in fields_per_mesh:
+            allFMTSLeavesToDisplay2=[]
+            for fmts in fields:
+                allFMTSLeavesToDisplay2+=fmts.splitDiscretizations()
+                pass
+            allFMTSLeavesToDisplay.append(allFMTSLeavesToDisplay2)
+            pass
+        self.assertEqual(len(allFMTSLeavesToDisplay),1)
+        self.assertEqual(len(allFMTSLeavesToDisplay[0]),2)
+        allFMTSLeavesPerTimeSeries=MEDFileAnyTypeFieldMultiTS.SplitIntoCommonTimeSeries(sum(allFMTSLeavesToDisplay,[]))
+        self.assertEqual(len(allFMTSLeavesPerTimeSeries),1)
+        self.assertEqual(len(allFMTSLeavesPerTimeSeries[0]),2)
+        allFMTSLeavesPerCommonSupport1=MEDFileAnyTypeFieldMultiTS.SplitPerCommonSupport(allFMTSLeavesToDisplay[0],ms[ms.getMeshesNames()[0]])
+        self.assertEqual(len(allFMTSLeavesPerCommonSupport1),2)
+        self.assertEqual(len(allFMTSLeavesPerCommonSupport1[0][0]),1)
+        self.assertEqual(len(allFMTSLeavesPerCommonSupport1[1][0]),1)
+        #
+        mst=MEDFileMeshStruct.New(ms[0])
+        #
+        fcscp=allFMTSLeavesPerCommonSupport1[0][1]
+        mml=fcscp.buildFromScratchDataSetSupport(0,fields)
+        mml2=mml.prepare()
+        self.assertTrue(isinstance(mml2,MEDUMeshMultiLev))
+        ncc,a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        self.assertTrue(ncc)
+        self.assertTrue(a0.isEqual(DataArrayDouble([(0.,0.,0.),(1.,0.,0.),(2.,0.,0.),(3.,0.,0.),(0.,1.,0.),(1.,1.,0.),(2.,1.,0.),(3.,1.,0.),(0.,2.,0.),(1.,2.,0.),(2.,2.,0.),(3.,2.,0.),(0.,3.,0.),(1.,3.,0.),(2.,3.,0.),(3.,3.,0.)]),1e-12))
+        self.assertTrue(a1.isEqual(DataArrayByte([])))
+        self.assertTrue(a2.isEqual(DataArrayInt([])))
+        self.assertTrue(a3.isEqual(DataArrayInt([])))
+        self.assertTrue(a4 is None)
+        self.assertTrue(a5 is None)
+        #
+        fff0=allFMTSLeavesPerCommonSupport1[0][0][0][0]
+        fsst=MEDFileField1TSStructItem.BuildItemFrom(fff0,mst)
+        fff0.loadArraysIfNecessary()
+        v=mml2.buildDataArray(fsst,fields,fff0.getUndergroundDataArray())
+        self.assertEqual(fff0.getName(),"f0NoPfl")
+        self.assertEqual(v.getHiddenCppPointer(),fff0.getUndergroundDataArray().getHiddenCppPointer())
+        vExp=DataArrayDouble([0.,1.,2.,3.,1.,1.5,2.2,3.1,2.,2.2,3.,3.1,3.,3.1,3.5,4])
+        self.assertTrue(v.isEqual(vExp,1e-12))
+        #
+        fcscp=allFMTSLeavesPerCommonSupport1[1][1]
+        mml=fcscp.buildFromScratchDataSetSupport(0,fields)
+        mml2=mml.prepare()
+        self.assertTrue(isinstance(mml2,MEDUMeshMultiLev))
+        ncc,a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        self.assertTrue(not ncc)
+        self.assertTrue(a0.isEqual(DataArrayDouble([(0,0,0),(1,0,0),(2,0,0),(3,0,0),(0,1,0),(1,1,0),(2,1,0),(0,2,0),(1,2,0),(0,3,0)]),1e-12))
+        self.assertTrue(a1.isEqual(DataArrayByte([])))
+        self.assertTrue(a2.isEqual(DataArrayInt([])))
+        self.assertTrue(a3.isEqual(DataArrayInt([])))
+        self.assertTrue(a4 is None)
+        self.assertTrue(a5 is None)
+        fff1=allFMTSLeavesPerCommonSupport1[1][0][0][0]
+        fsst=MEDFileField1TSStructItem.BuildItemFrom(fff1,mst)
+        fff1.loadArraysIfNecessary()
+        v=mml2.buildDataArray(fsst,fields,fff1.getUndergroundDataArray())
+        self.assertEqual(fff1.getName(),"f1Pfl")
+        self.assertNotEqual(v.getHiddenCppPointer(),fff1.getUndergroundDataArray().getHiddenCppPointer()) # pointers are not equal because Profile
+        vExp=DataArrayDouble([3.,2.,1.,0.,2.,1.5,0.,1.,0.,0.2])
+        self.assertTrue(v.isEqual(vExp,1e-12))
+        pass
+
+    def test28(self):
+        """ This test defines 2 fields f0,f1,f2,f3 lying on an unstructured mesh whith cells including NORM_POINT1.
+        Both f0 and f1 are on NODES and f2 and f3 are on cells. f1 and f2 share the same support.
+        f0 is on a nodal support that is not matchable with any cells (including NORM_POINT1)
+        This test is a more aggressive version of test26.
+        """
+        fname="ForMEDReader28.med"
+        coords=DataArrayDouble([(0.,0.,0.),(1.,0.,0.),(2.,0.,0.),(3.,0.,0.),(0.,1.,0.),(1.,1.,0.),(2.,1.,0.),(3.,1.,0.),(0.,2.,0.),(1.,2.,0.),(2.,2.,0.),(3.,2.,0.),(0.,3.,0.),(1.,3.,0.),(2.,3.,0.),(3.,3.,0.)])
+        m0=MEDCouplingUMesh("mesh",2)
+        m0.allocateCells()
+        for elt in [[2,6,3],[6,7,3],[9,6,5],[9,10,6]]:
+            m0.insertNextCell(NORM_TRI3,elt)
+            pass
+        for elt in [[0,4,5,1],[1,5,6,2],[4,8,9,5],[6,10,11,7],[8,12,13,9],[9,13,14,10],[10,14,15,11]]:
+            m0.insertNextCell(NORM_QUAD4,elt)
+            pass
+        m0.setCoords(coords)
+        m2=MEDCouplingUMesh("mesh",0) ; m2.setCoords(coords)
+        m2.allocateCells()
+        for elt in [[8],[13]]:
+            m2.insertNextCell(NORM_POINT1,elt)
+            pass
+        ##
+        mm=MEDFileUMesh()
+        mm.setMeshAtLevel(0,m0)
+        mm.setMeshAtLevel(-2,m2)
+        mm.setFamilyFieldArr(0,DataArrayInt([-1,-2,-3,-4,-5,-6,-7,-8,-9,-10,-11]))
+        mm.setFamilyFieldArr(-2,DataArrayInt([-12,-13]))
+        mm.setFamilyFieldArr(1,DataArrayInt([1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16]))
+        #
+        f1ts0Node=MEDFileField1TS()
+        f1ts1Node=MEDFileField1TS()
+        f1ts2Cell=MEDFileField1TS()
+        f1ts3Cell=MEDFileField1TS()
+        #
+        pfl0=DataArrayInt([4,5,6,8,9,12]) ; pfl0.setName("pfl0")
+        pfl1=DataArrayInt([0,1,4,5,7,10]) ; pfl1.setName("pfl1")
+        pfl2=DataArrayInt([0,1,2,3,4,5,6,7,10,11,14,15]) ; pfl2.setName("pfl2")
+        #
+        f0Node=MEDCouplingFieldDouble(ON_NODES) ; f0Node.setName("f0Node")
+        arr0=DataArrayDouble(6) ; arr0.iota()
+        f0Node.setArray(arr0)
+        f1ts0Node.setFieldProfile(f0Node,mm,0,pfl0)
+        #
+        f1Node=MEDCouplingFieldDouble(ON_NODES) ; f1Node.setName("f1Node")
+        arr1=DataArrayDouble(12) ; arr1.iota() ; arr1.reverse()
+        f1Node.setArray(arr1)
+        f1ts1Node.setFieldProfile(f1Node,mm,0,pfl2)
+        #
+        f2Cell=MEDCouplingFieldDouble(ON_CELLS) ; f2Cell.setName("f2Cell")
+        arr2=DataArrayDouble([2,3,0,1,4,5])
+        f2Cell.setArray(arr2)
+        f1ts2Cell.setFieldProfile(f2Cell,mm,0,pfl1)
+        #
+        f3Cell=MEDCouplingFieldDouble(ON_CELLS) ; f3Cell.setName("f3Cell")
+        arr3=DataArrayDouble([5,4,3,2,1,0]) ; f3Cell.setArray(arr3)
+        f1ts3Cell.setFieldProfile(f3Cell,mm,0,pfl1)
+        f3Cell.setMesh(m2)
+        arr3=DataArrayDouble([-1.1,-3.1]) ; f3Cell.setArray(arr3)
+        f1ts3Cell.setFieldNoProfileSBT(f3Cell)
+        #
+        fs=MEDFileFields()
+        for f in [f1ts0Node,f1ts1Node,f1ts2Cell,f1ts3Cell]:
+            fmts=MEDFileFieldMultiTS()
+            fmts.pushBackTimeStep(f)
+            fs.pushField(fmts)
+            pass
+        mm.write(fname,2)
+        fs.write(fname,0)
+        ########## GO for reading in MEDReader,by not loading all. Mesh is fully loaded but not fields values
+        ms=MEDFileMeshes(fname)
+        fields=MEDFileFields(fname,False)
+        fields.removeFieldsWithoutAnyTimeStep()
+        fields_per_mesh=[fields.partOfThisLyingOnSpecifiedMeshName(meshName) for meshName in ms.getMeshesNames()]
+        allFMTSLeavesToDisplay=[]
+        for fields in fields_per_mesh:
+            allFMTSLeavesToDisplay2=[]
+            for fmts in fields:
+                allFMTSLeavesToDisplay2+=fmts.splitDiscretizations()
+                pass
+            allFMTSLeavesToDisplay.append(allFMTSLeavesToDisplay2)
+            pass
+        self.assertEqual(len(allFMTSLeavesToDisplay),1)
+        self.assertEqual(len(allFMTSLeavesToDisplay[0]),4)
+        allFMTSLeavesPerTimeSeries=MEDFileAnyTypeFieldMultiTS.SplitIntoCommonTimeSeries(sum(allFMTSLeavesToDisplay,[]))
+        self.assertEqual(len(allFMTSLeavesPerTimeSeries),1)
+        self.assertEqual(len(allFMTSLeavesPerTimeSeries[0]),4)
+        allFMTSLeavesPerCommonSupport1=MEDFileAnyTypeFieldMultiTS.SplitPerCommonSupport(allFMTSLeavesToDisplay[0],ms[ms.getMeshesNames()[0]])
+        self.assertEqual(len(allFMTSLeavesPerCommonSupport1),3)
+        self.assertEqual(len(allFMTSLeavesPerCommonSupport1[0][0]),2)
+        self.assertEqual(len(allFMTSLeavesPerCommonSupport1[1][0]),1)
+        self.assertEqual(len(allFMTSLeavesPerCommonSupport1[2][0]),1)
+        #
+        mst=MEDFileMeshStruct.New(ms[0])
+        #
+        fcscp=allFMTSLeavesPerCommonSupport1[2][1]
+        mml=fcscp.buildFromScratchDataSetSupport(0,fields)
+        mml2=mml.prepare()
+        self.assertTrue(isinstance(mml2,MEDUMeshMultiLev))
+        ncc,a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        self.assertTrue(not ncc)
+        self.assertTrue(a0.isEqual(DataArrayDouble([0.,1.,0.,1.,1.,0.,2.,1.,0.,0.,2.,0.,1.,2.,0.,0.,3.,0.],6,3),1e-12))
+        self.assertTrue(a1.isEqual(DataArrayByte([5,9,1,1])))
+        self.assertTrue(a2.isEqual(DataArrayInt([0,4,9,11])))
+        self.assertTrue(a3.isEqual(DataArrayInt([3,4,2,1,4,0,3,4,1,1,3,1,5])))
+        self.assertTrue(a4 is None)
+        self.assertTrue(a5 is None)
+        a6,a7=mml2.retrieveFamilyIdsOnCells()
+        self.assertTrue(a6.isEqual(DataArrayInt([-3,-7,-12,13])))
+        self.assertTrue(not a7) # copy here because profile on cells
+        a8,a9=mml2.retrieveNumberIdsOnCells()
+        self.assertTrue(a8 is None)
+        self.assertTrue(a9) # no copy here because no number field
+        a10,a11=mml2.retrieveFamilyIdsOnNodes()
+        self.assertTrue(a10.isEqual(DataArrayInt([5,6,7,9,10,13])))
+        self.assertTrue(not a11) # copy here
+        a12,a13=mml2.retrieveNumberIdsOnNodes()
+        self.assertTrue(a12 is None)
+        self.assertTrue(a13) # no copy here because no number field
+        #
+        fff0=allFMTSLeavesPerCommonSupport1[2][0][0][0]
+        fsst=MEDFileField1TSStructItem.BuildItemFrom(fff0,mst)
+        fff0.loadArraysIfNecessary()
+        v=mml2.buildDataArray(fsst,fields,fff0.getUndergroundDataArray())
+        self.assertEqual(fff0.getName(),"f0Node")
+        self.assertEqual(v.getHiddenCppPointer(),fff0.getUndergroundDataArray().getHiddenCppPointer())
+        vExp=DataArrayDouble([0.,1.,2.,3.,4.,5.])
+        self.assertTrue(v.isEqual(vExp,1e-12)) # <- THE test is here !!!
+        ###
+        fcscp=allFMTSLeavesPerCommonSupport1[0][1]
+        mml=fcscp.buildFromScratchDataSetSupport(0,fields)
+        mml2=mml.prepare()
+        self.assertTrue(isinstance(mml2,MEDUMeshMultiLev))
+        ncc,a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        self.assertTrue(not ncc)
+        self.assertTrue(a0.isEqual(DataArrayDouble([(0,0,0),(1,0,0),(2,0,0),(3,0,0),(0,1,0),(1,1,0),(2,1,0),(3,1,0),(2,2,0),(3,2,0),(2,3,0),(3,3,0)]),1e-12))
+        self.assertTrue(a1.isEqual(DataArrayByte([5,5,9,9,9,9])))
+        self.assertTrue(a2.isEqual(DataArrayInt([0,4,8,13,18,23])))
+        self.assertTrue(a3.isEqual(DataArrayInt([3,2,6,3,3,6,7,3,4,0,4,5,1,4,1,5,6,2,4,6,8,9,7,4,8,10,11,9])))
+        self.assertTrue(a4 is None)
+        self.assertTrue(a5 is None)
+        fff1=allFMTSLeavesPerCommonSupport1[0][0][0][0]
+        fsst=MEDFileField1TSStructItem.BuildItemFrom(fff1,mst)
+        fff1.loadArraysIfNecessary()
+        v=mml2.buildDataArray(fsst,fields,fff1.getUndergroundDataArray())
+        self.assertEqual(fff1.getName(),"f2Cell")
+        self.assertNotEqual(v.getHiddenCppPointer(),fff0.getUndergroundDataArray().getHiddenCppPointer())
+        vExp=DataArrayDouble([2,3,0,1,4,5])
+        self.assertTrue(v.isEqual(vExp,1e-12))
+        fff2=allFMTSLeavesPerCommonSupport1[0][0][1][0]
+        fsst=MEDFileField1TSStructItem.BuildItemFrom(fff2,mst)
+        fff2.loadArraysIfNecessary()
+        v=mml2.buildDataArray(fsst,fields,fff2.getUndergroundDataArray())
+        self.assertEqual(fff2.getName(),"f1Node")
+        self.assertNotEqual(v.getHiddenCppPointer(),fff0.getUndergroundDataArray().getHiddenCppPointer())
+        vExp=DataArrayDouble([11,10,9,8,7,6,5,4,3,2,1,0])
+        self.assertTrue(v.isEqual(vExp,1e-12))
+        ###
+        fcscp=allFMTSLeavesPerCommonSupport1[1][1]
+        mml=fcscp.buildFromScratchDataSetSupport(0,fields)
+        mml2=mml.prepare()
+        self.assertTrue(isinstance(mml2,MEDUMeshMultiLev))
+        ncc,a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        self.assertTrue(ncc)# here all the 16 nodes are taken
+        self.assertTrue(a0.isEqual(DataArrayDouble([(0.,0.,0.),(1.,0.,0.),(2.,0.,0.),(3.,0.,0.),(0.,1.,0.),(1.,1.,0.),(2.,1.,0.),(3.,1.,0.),(0.,2.,0.),(1.,2.,0.),(2.,2.,0.),(3.,2.,0.),(0.,3.,0.),(1.,3.,0.),(2.,3.,0.),(3.,3.,0.)]),1e-12))
+        self.assertTrue(a1.isEqual(DataArrayByte([1,1,5,5,9,9,9,9])))
+        self.assertTrue(a2.isEqual(DataArrayInt([0,2,4,8,12,17,22,27])))
+        self.assertTrue(a3.isEqual(DataArrayInt([1,8,1,13,3,2,6,3,3,6,7,3,4,0,4,5,1,4,1,5,6,2,4,6,10,11,7,4,10,14,15,11])))
+        self.assertTrue(a4 is None)
+        self.assertTrue(a5 is None)
+        fff3=allFMTSLeavesPerCommonSupport1[1][0][0][0]
+        fsst=MEDFileField1TSStructItem.BuildItemFrom(fff3,mst)
+        fff3.loadArraysIfNecessary()
+        v=mml2.buildDataArray(fsst,fields,fff3.getUndergroundDataArray())
+        self.assertEqual(fff3.getName(),"f3Cell")
+        self.assertNotEqual(v.getHiddenCppPointer(),fff0.getUndergroundDataArray().getHiddenCppPointer())
+        vExp=DataArrayDouble([-1.1,-3.1,5,4,3,2,1,0])
+        self.assertTrue(v.isEqual(vExp,1e-12))
+        pass
+
+    def test29(self):
+        """ This test focused on HEXA27 cell for which the MED numbering is not equal to the VTK numbering. So here the HEXA27 cell is those in MED file documentation (reference element).
+        """
+        fname="ForMEDReader29.med"
+        coo=DataArrayDouble([[0.,2.,2.],[0.,0.,2.],[2.,0.,2.],[2.,2.,2.],[0.,2.,0.],[0.,0.,0.],[2.,0.,0.],[2.,2.,0.], [0.,1.,2.],[1.,0.,2.],[2.,1.,2.],[1.,2.,2.], [0.,1.,0.],[1.,0.,0.],[2.,1.,0.],[1.,2.,0.], [0.,2.,1.],[0.,0.,1.],[2.,0.,1.],[2.,2.,1.], [1.,1.,2.], [0.,1.,1.],[1.,0.,1.],[2.,1.,1.],[1.,2.,1.], [1.,1.,0.], [1.,1.,1.]])
+        m=MEDCouplingUMesh("mesh",3) ; m.setCoords(coo)
+        m.allocateCells()
+        # MED = [0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26]
+        # VTK = [0,1,2,3,4,5,6,7, 8,9,10,11,12,13,14,15,16,17,18,19,24,22,21,23,20,25,26]
+        m.insertNextCell(NORM_HEXA27,[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26])
+        fCell=MEDCouplingFieldDouble(ON_CELLS) ; fCell.setName("fCell")
+        arrCell=DataArrayDouble([7.]) ; arrCell.setInfoOnComponent(0,"smth") ; fCell.setArray(arrCell)
+        fCell.setMesh(m)
+        MEDLoader.WriteField(fname,fCell,True)
+        refCoo=[-1.,-1.,-1.,-1.,1.,-1.,1.,1.,-1.,1.,-1.,-1.,-1.,-1.,1.,-1.,1.,1.,1.,1.,1.,1.,-1.,1.,-1.,0.,-1.,0.,1.,-1.,1.,0.,-1.,0.,-1.,-1.,-1.,0.,1.,0.,1.,1.,1.,0.,1.,0.,-1.,1.,-1.,-1.,0.,-1.,1.,0.,1.,1.,0.,1.,-1.,0.,0.,0.,-1.,-1.,0.,0.,0.,1.,0.,1.,0.,0.,0.,-1.,0.,0.,0.,1.,0.,0.,0.]
+        weights=[0.1714677640603571,0.27434842249657115,0.1714677640603571,0.27434842249657115,0.43895747599451346,0.27434842249657115,0.1714677640603571,0.27434842249657115,0.1714677640603571,0.27434842249657115,0.43895747599451346,0.27434842249657115,0.43895747599451346,0.7023319615912209,0.43895747599451346,0.27434842249657115,0.43895747599451346,0.27434842249657115,0.1714677640603571,0.27434842249657115,0.1714677640603571,0.27434842249657115,0.43895747599451346,0.27434842249657115,0.1714677640603571,0.27434842249657115,0.1714677640603571]
+        gCoords=[-0.774596669241483,-0.774596669241483,-0.774596669241483,-0.774596669241483,-0.774596669241483,0.0,-0.774596669241483,-0.774596669241483,0.774596669241483,-0.774596669241483,0.0,-0.774596669241483,-0.774596669241483,0.0,0.0,-0.774596669241483,0.0,0.774596669241483,-0.774596669241483,0.774596669241483,-0.774596669241483,-0.774596669241483,0.774596669241483,0.0,-0.774596669241483,0.774596669241483,0.774596669241483,0.0,-0.774596669241483,-0.774596669241483,0.0,-0.774596669241483,0.0,0.0,-0.774596669241483,0.774596669241483,0.0,0.0,-0.774596669241483,0.0,0.0,0.0,0.0,0.0,0.774596669241483,0.0,0.774596669241483,-0.774596669241483,0.0,0.774596669241483,0.0,0.0,0.774596669241483,0.774596669241483,0.774596669241483,-0.774596669241483,-0.774596669241483,0.774596669241483,-0.774596669241483,0.0,0.774596669241483,-0.774596669241483,0.774596669241483,0.774596669241483,0.0,-0.774596669241483,0.774596669241483,0.0,0.0,0.774596669241483,0.0,0.774596669241483,0.774596669241483,0.774596669241483,-0.774596669241483,0.774596669241483,0.774596669241483,0.0,0.774596669241483,0.774596669241483,0.774596669241483]
+        fGauss=MEDCouplingFieldDouble(ON_GAUSS_PT) ; fGauss.setName("fGauss")
+        fGauss.setMesh(m)
+        fGauss.setGaussLocalizationOnType(NORM_HEXA27,refCoo,gCoords,weights)
+        arrGauss=DataArrayDouble(fGauss.getNumberOfTuplesExpected()) ; arrGauss.setInfoOnComponent(0,"gaussc") ; arrGauss.iota()
+        fGauss.setArray(arrGauss)
+        MEDLoader.WriteFieldUsingAlreadyWrittenMesh(fname,fGauss)
+        ########## GO for reading in MEDReader,by not loading all. Mesh is fully loaded but not fields values
+        ms=MEDFileMeshes(fname)
+        fields=MEDFileFields(fname,False)
+        fields.removeFieldsWithoutAnyTimeStep()
+        fields_per_mesh=[fields.partOfThisLyingOnSpecifiedMeshName(meshName) for meshName in ms.getMeshesNames()]
+        allFMTSLeavesToDisplay=[]
+        for fields in fields_per_mesh:
+            allFMTSLeavesToDisplay2=[]
+            for fmts in fields:
+                allFMTSLeavesToDisplay2+=fmts.splitDiscretizations()
+                pass
+            allFMTSLeavesToDisplay.append(allFMTSLeavesToDisplay2)
+            pass
+        self.assertEqual(len(allFMTSLeavesToDisplay),1)
+        self.assertEqual(len(allFMTSLeavesToDisplay[0]),2)
+        allFMTSLeavesPerTimeSeries=MEDFileAnyTypeFieldMultiTS.SplitIntoCommonTimeSeries(sum(allFMTSLeavesToDisplay,[]))
+        self.assertEqual(len(allFMTSLeavesPerTimeSeries),1)
+        self.assertEqual(len(allFMTSLeavesPerTimeSeries[0]),2)
+        allFMTSLeavesPerCommonSupport1=MEDFileAnyTypeFieldMultiTS.SplitPerCommonSupport(allFMTSLeavesToDisplay[0],ms[ms.getMeshesNames()[0]])
+        self.assertEqual(len(allFMTSLeavesPerCommonSupport1),1)
+        self.assertEqual(len(allFMTSLeavesPerCommonSupport1[0][0]),2)
+        #
+        mst=MEDFileMeshStruct.New(ms[0])
+        #
+        fcscp=allFMTSLeavesPerCommonSupport1[0][1]
+        mml=fcscp.buildFromScratchDataSetSupport(0,fields)
+        mml2=mml.prepare()
+        self.assertTrue(isinstance(mml2,MEDUMeshMultiLev))
+        ncc,a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        self.assertTrue(a0.isEqual(coo,1e-12))
+        self.assertTrue(a1.isEqual(DataArrayByte([29])))
+        self.assertTrue(a2.isEqual(DataArrayInt([0])))
+        # the connectivity must be not a iota as declared in m.insertNextCell
+        self.assertTrue(a3.isEqual(DataArrayInt([27,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,24,22,21,23,20,25,26])))# the test is on this line to check that connectivity has been processed for HEXA27
+        self.assertTrue(a4 is None)
+        self.assertTrue(a5 is None)
+        ffCell=allFMTSLeavesPerCommonSupport1[0][0][0][0]
+        fsst=MEDFileField1TSStructItem.BuildItemFrom(ffCell,mst)
+        ffCell.loadArraysIfNecessary()
+        v=mml2.buildDataArray(fsst,fields,ffCell.getUndergroundDataArray())
+        self.assertEqual(v.getHiddenCppPointer(),ffCell.getUndergroundDataArray().getHiddenCppPointer())
+        self.assertEqual(ffCell.getName(),"fCell")
+        self.assertTrue(v.isEqual(arrCell,1e-12)) ; self.assertTrue(v.isEqualWithoutConsideringStr(DataArrayDouble([7.]),1e-12)) ; self.assertEqual(v.getInfoOnComponents(),["smth"])
+        del ffCell
+        #
+        ffGauss=allFMTSLeavesPerCommonSupport1[0][0][1][0]
+        fsst=MEDFileField1TSStructItem.BuildItemFrom(ffGauss,mst)
+        ffGauss.loadArraysIfNecessary()
+        v=mml2.buildDataArray(fsst,fields,ffGauss.getUndergroundDataArray())
+        self.assertEqual(v.getHiddenCppPointer(),ffGauss.getUndergroundDataArray().getHiddenCppPointer())
+        self.assertEqual(ffGauss.getName(),"fGauss")
+        self.assertTrue(v.isEqual(arrGauss,1e-12)) ; self.assertTrue(v.isEqualWithoutConsideringStr(DataArrayDouble(range(27)),1e-12)) ; self.assertEqual(v.getInfoOnComponents(),["gaussc"])
+        ffGauss=allFMTSLeavesPerCommonSupport1[0][0][1][0]
+        pass
+    
+    def test30(self):
+        """ This test is focused on cartesian meshes. Here the cartesian mesh "CartMesh" has a field on HEXA8 (FieldOnCells) and a field on QUAD4 (FieldOnFaces).
+        So the first one (FieldOnCells) lies on a cartesian mesh whereas the second one lies on unstructured one.
+        """
+        fname="ForMEDReader30.med"
+        c=MEDCouplingCMesh()
+        arrX=DataArrayDouble(3) ; arrX.iota()
+        arrY=DataArrayDouble(4) ; arrY.iota()
+        arrZ=DataArrayDouble(5) ; arrZ.iota()
+        c.setCoords(arrX,arrY,arrZ)
+        c.setName("CartMesh")
+        cc=MEDFileCMesh()
+        cc.setMesh(c)
+        tmpFacesMesh=c.build1SGTSubLevelMesh()
+        famIdFaces=DataArrayInt(98) ; famIdFaces[:36]=-1 ; famIdFaces[36:68]=-2 ; famIdFaces[68:]=-3
+        famIdCells=DataArrayInt(24) ; famIdCells[:]=0
+        #cc.setFamilyFieldArr(0,famIdCells)
+        #cc.setFamilyFieldArr(-1,famIdFaces)
+        cc.addFamily("FacesX",-1) ; cc.addFamily("FacesY",-2) ; cc.addFamily("FacesZ",-3)
+        cc.setFamiliesOnGroup("FacesX1",["FacesX"])
+        cc.setFamiliesOnGroup("FacesY1",["FacesY"])
+        cc.setFamiliesOnGroup("FacesZ1",["FacesZ"])
+        #
+        fmts0=MEDFileFieldMultiTS()
+        fmts1=MEDFileFieldMultiTS()
+        for i in xrange(30):
+            f1ts=MEDFileField1TS()
+            fFaces=MEDCouplingFieldDouble(ON_CELLS) ; fFaces.setName("FieldOnFaces")
+            arr=DataArrayDouble(98) ; arr.iota() ; arr[i]=100.
+            fFaces.setArray(arr)
+            fFaces.setTime(float(i)+0.1,i,-1)
+            fFaces.setMesh(tmpFacesMesh)
+            f1ts.setFieldNoProfileSBT(fFaces)
+            fmts0.pushBackTimeStep(f1ts)
+            #
+            f1ts=MEDFileField1TS()
+            fCells=MEDCouplingFieldDouble(ON_CELLS) ; fCells.setName("FieldOnCells")
+            arr=DataArrayDouble(24) ; arr.iota() ; arr[i%24]=30.
+            fCells.setArray(arr)
+            fCells.setTime(float(i)+0.1,i,-1)
+            fCells.setMesh(c)
+            f1ts.setFieldNoProfileSBT(fCells)
+            fmts1.pushBackTimeStep(f1ts)
+            pass
+        fs=MEDFileFields()
+        fs.pushField(fmts0)
+        fs.pushField(fmts1)
+        cc.write(fname,2)
+        fs.write(fname,0)
+        ########## GO for reading in MEDReader,by not loading all. Mesh is fully loaded but not fields values
+        ms=MEDFileMeshes(fname)
+        fields=MEDFileFields(fname,False)
+        fields.removeFieldsWithoutAnyTimeStep()
+        fields_per_mesh=[fields.partOfThisLyingOnSpecifiedMeshName(meshName) for meshName in ms.getMeshesNames()]
+        allFMTSLeavesToDisplay=[]
+        for fields in fields_per_mesh:
+            allFMTSLeavesToDisplay2=[]
+            for fmts in fields:
+                allFMTSLeavesToDisplay2+=fmts.splitDiscretizations()
+                pass
+            allFMTSLeavesToDisplay.append(allFMTSLeavesToDisplay2)
+            pass
+        self.assertEqual(len(allFMTSLeavesToDisplay),1)
+        self.assertEqual(len(allFMTSLeavesToDisplay[0]),2)
+        allFMTSLeavesPerTimeSeries=MEDFileAnyTypeFieldMultiTS.SplitIntoCommonTimeSeries(sum(allFMTSLeavesToDisplay,[]))
+        self.assertEqual(len(allFMTSLeavesPerTimeSeries),1)
+        self.assertEqual(len(allFMTSLeavesPerTimeSeries[0]),2)
+        allFMTSLeavesPerCommonSupport1=MEDFileAnyTypeFieldMultiTS.SplitPerCommonSupport(allFMTSLeavesToDisplay[0],ms[ms.getMeshesNames()[0]])
+        self.assertEqual(len(allFMTSLeavesPerCommonSupport1),2)
+        self.assertEqual(len(allFMTSLeavesPerCommonSupport1[0][0]),1)
+        self.assertEqual(len(allFMTSLeavesPerCommonSupport1[1][0]),1)
+        #
+        mst=MEDFileMeshStruct.New(ms[0])
+        #
+        fcscp=allFMTSLeavesPerCommonSupport1[0][1]
+        mml=fcscp.buildFromScratchDataSetSupport(0,fields)
+        mml2=mml.prepare()
+        self.assertTrue(isinstance(mml2,MEDCMeshMultiLev)) # here CMesh is important
+        (a,b,c),d=mml2.buildVTUArrays()
+        self.assertTrue(d)#d is True because the a,b and c are directly those in the internal data structure
+        self.assertTrue(a.isEqual(arrX,1e-12))
+        self.assertTrue(b.isEqual(arrY,1e-12))
+        self.assertTrue(c.isEqual(arrZ,1e-12))
+        for i in xrange(30):
+            ffCell=allFMTSLeavesPerCommonSupport1[0][0][0][i]
+            fsst=MEDFileField1TSStructItem.BuildItemFrom(ffCell,mst)
+            ffCell.loadArraysIfNecessary()
+            v=mml2.buildDataArray(fsst,fields,ffCell.getUndergroundDataArray())
+            self.assertEqual(v.getHiddenCppPointer(),ffCell.getUndergroundDataArray().getHiddenCppPointer())
+            myarr=DataArrayDouble(24) ; myarr.iota() ; myarr[i%24]=30.
+            self.assertEqual(ffCell.getName(),"FieldOnCells")
+            self.assertTrue(v.isEqual(myarr,1e-12))
+            pass
+        #
+        fcscp=allFMTSLeavesPerCommonSupport1[1][1]
+        mml=fcscp.buildFromScratchDataSetSupport(0,fields)
+        mml2=mml.prepare()
+        self.assertTrue(isinstance(mml2,MEDUMeshMultiLev)) # here UMesh is important
+        ncc,a0,a1,a2,a3,a4,a5=mml2.buildVTUArrays()
+        self.assertTrue(not ncc)# BUG EDF 7972 ! here all the nodes are taken, BUT the coordinates comes from a non available array in file so in memory ! so false is returned !
+        self.assertTrue(a1.isEqual(DataArrayByte([9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9])))
+        self.assertTrue(a2.isEqual(DataArrayInt([0,5,10,15,20,25,30,35,40,45,50,55,60,65,70,75,80,85,90,95,100,105,110,115,120,125,130,135,140,145,150,155,160,165,170,175,180,185,190,195,200,205,210,215,220,225,230,235,240,245,250,255,260,265,270,275,280,285,290,295,300,305,310,315,320,325,330,335,340,345,350,355,360,365,370,375,380,385,390,395,400,405,410,415,420,425,430,435,440,445,450,455,460,465,470,475,480,485])))
+        self.assertTrue(a3.isEqual(DataArrayInt([4,0,12,15,3,4,12,24,27,15,4,24,36,39,27,4,36,48,51,39,4,3,15,18,6,4,15,27,30,18,4,27,39,42,30,4,39,51,54,42,4,6,18,21,9,4,18,30,33,21,4,30,42,45,33,4,42,54,57,45,4,1,13,16,4,4,13,25,28,16,4,25,37,40,28,4,37,49,52,40,4,4,16,19,7,4,16,28,31,19,4,28,40,43,31,4,40,52,55,43,4,7,19,22,10,4,19,31,34,22,4,31,43,46,34,4,43,55,58,46,4,2,14,17,5,4,14,26,29,17,4,26,38,41,29,4,38,50,53,41,4,5,17,20,8,4,17,29,32,20,4,29,41,44,32,4,41,53,56,44,4,8,20,23,11,4,20,32,35,23,4,32,44,47,35,4,44,56,59,47,4,0,12,13,1,4,12,24,25,13,4,24,36,37,25,4,36,48,49,37,4,1,13,14,2,4,13,25,26,14,4,25,37,38,26,4,37,49,50,38,4,3,15,16,4,4,15,27,28,16,4,27,39,40,28,4,39,51,52,40,4,4,16,17,5,4,16,28,29,17,4,28,40,41,29,4,40,52,53,41,4,6,18,19,7,4,18,30,31,19,4,30,42,43,31,4,42,54,55,43,4,7,19,20,8,4,19,31,32,20,4,31,43,44,32,4,43,55,56,44,4,9,21,22,10,4,21,33,34,22,4,33,45,46,34,4,45,57,58,46,4,10,22,23,11,4,22,34,35,23,4,34,46,47,35,4,46,58,59,47,4,0,1,4,3,4,3,4,7,6,4,6,7,10,9,4,1,2,5,4,4,4,5,8,7,4,7,8,11,10,4,12,13,16,15,4,15,16,19,18,4,18,19,22,21,4,13,14,17,16,4,16,17,20,19,4,19,20,23,22,4,24,25,28,27,4,27,28,31,30,4,30,31,34,33,4,25,26,29,28,4,28,29,32,31,4,31,32,35,34,4,36,37,40,39,4,39,40,43,42,4,42,43,46,45,4,37,38,41,40,4,40,41,44,43,4,43,44,47,46,4,48,49,52,51,4,51,52,55,54,4,54,55,58,57,4,49,50,53,52,4,52,53,56,55,4,55,56,59,58])))
+        self.assertTrue(a4 is None)
+        self.assertTrue(a5 is None)
+        for i in xrange(30):
+            ffCell=allFMTSLeavesPerCommonSupport1[1][0][0][i]
+            fsst=MEDFileField1TSStructItem.BuildItemFrom(ffCell,mst)
+            ffCell.loadArraysIfNecessary()
+            v=mml2.buildDataArray(fsst,fields,ffCell.getUndergroundDataArray())
+            self.assertEqual(v.getHiddenCppPointer(),ffCell.getUndergroundDataArray().getHiddenCppPointer())
+            myarr=DataArrayDouble(98) ; myarr.iota() ; myarr[i]=100.
+            self.assertEqual(ffCell.getName(),"FieldOnFaces")
+            self.assertTrue(v.isEqual(myarr,1e-12))
+            pass
+        pass
+    
     pass
 
 unittest.main()