From: geay <anthony.geay@cea.fr>
Date: Fri, 16 May 2014 13:30:48 +0000 (+0200)
Subject: numpy bindings for dense matrix
X-Git-Tag: V7_5_0a1~2^2~32^2~45
X-Git-Url: http://git.salome-platform.org/gitweb/?a=commitdiff_plain;h=436a458c32157f508f19de284696a4b338412a82;p=tools%2Fmedcoupling.git

numpy bindings for dense matrix
---

diff --git a/src/MEDCoupling_Swig/MEDCouplingCommon.i b/src/MEDCoupling_Swig/MEDCouplingCommon.i
index 8e476cce0..98c05d12b 100644
--- a/src/MEDCoupling_Swig/MEDCouplingCommon.i
+++ b/src/MEDCoupling_Swig/MEDCouplingCommon.i
@@ -4849,6 +4849,13 @@ namespace ParaMEDMEM
         Py_XINCREF(trueSelf);
         return trueSelf;
       }
+#ifdef WITH_NUMPY
+      PyObject *toNumPyMatrix() throw(INTERP_KERNEL::Exception) // not const. It is not a bug !
+      {
+        PyObject *obj(ToNumPyArrayUnderground<DataArrayDouble,double>(self->getData(),NPY_DOUBLE,"DataArrayDouble",self->getNumberOfRows(),self->getNumberOfCols()));
+        return obj;
+      }
+#endif
     }
   };
 }
diff --git a/src/MEDCoupling_Swig/MEDCouplingDataArrayTypemaps.i b/src/MEDCoupling_Swig/MEDCouplingDataArrayTypemaps.i
index 5eb5af871..7b76dd62e 100644
--- a/src/MEDCoupling_Swig/MEDCouplingDataArrayTypemaps.i
+++ b/src/MEDCoupling_Swig/MEDCouplingDataArrayTypemaps.i
@@ -399,7 +399,7 @@ int NumpyArrSetBaseObjectExt(PyArrayObject *arr, PyObject *obj)
 }
 
 template<class MCData, class T>
-PyObject *ToNumPyArray(MCData *self, int npyObjectType, const char *MCDataStr)
+PyObject *ToNumPyArrayUnderground(MCData *self, int npyObjectType, const char *MCDataStr, int nbTuples, int nbComp)
 {
   if(!self->isAllocated())
     {
@@ -407,7 +407,6 @@ PyObject *ToNumPyArray(MCData *self, int npyObjectType, const char *MCDataStr)
       throw INTERP_KERNEL::Exception(oss.str().c_str());
     }
   ParaMEDMEM::MemArray<T>& mem=self->accessToMemArray();
-  int nbComp=self->getNumberOfComponents();
   if(nbComp==0)
     {
       std::ostringstream oss; oss << MCDataStr << "::toNumPyArray : number of components of this is 0 ! Should be > 0 !"; 
@@ -415,7 +414,7 @@ PyObject *ToNumPyArray(MCData *self, int npyObjectType, const char *MCDataStr)
     }
   int nbDims=nbComp==1?1:2;
   npy_intp dim[2];
-  dim[0]=(npy_intp)self->getNumberOfTuples(); dim[1]=nbComp;
+  dim[0]=(npy_intp)nbTuples; dim[1]=nbComp;
   const T *bg=self->getConstPointer();
   PyObject *ret(PyArray_SimpleNewFromData(nbDims,dim,npyObjectType,const_cast<T *>(bg)));
   if(mem.isDeallocatorCalled())
@@ -451,6 +450,12 @@ PyObject *ToNumPyArray(MCData *self, int npyObjectType, const char *MCDataStr)
   return ret;
 }
 
+template<class MCData, class T>
+PyObject *ToNumPyArray(MCData *self, int npyObjectType, const char *MCDataStr)
+{
+  return ToNumPyArrayUnderground<MCData,T>(self,npyObjectType,MCDataStr,self->getNumberOfTuples(),self->getNumberOfComponents());
+}
+
 SWIGINTERN PyObject *ParaMEDMEM_DataArrayInt_toNumPyArray(ParaMEDMEM::DataArrayInt *self);
 SWIGINTERN PyObject *ParaMEDMEM_DataArrayDouble_toNumPyArray(ParaMEDMEM::DataArrayDouble *self);
 
diff --git a/src/MEDCoupling_Swig/MEDCouplingNumPyTest.py b/src/MEDCoupling_Swig/MEDCouplingNumPyTest.py
index 6a6221285..fbc5aeaa5 100644
--- a/src/MEDCoupling_Swig/MEDCouplingNumPyTest.py
+++ b/src/MEDCoupling_Swig/MEDCouplingNumPyTest.py
@@ -656,6 +656,14 @@ class MEDCouplingNumPyTest(unittest.TestCase):
         self.assertEqual(a2.tolist(),[[0.,1.,2.],[3.,4.,5.],[6.,7.,8.],[9.,10.,11.],[12.,13.,14.]])
         pass
 
+    @unittest.skipUnless(MEDCouplingHasNumPyBindings(),"requires numpy")
+    def test27(self):
+        m0=DenseMatrix(DataArrayDouble([2,3,4,5,1,6]),2,3)
+        m0np=m0.toNumPyMatrix()
+        self.assertEqual(m0np.shape,(2,3))
+        self.assertEqual(m0np.tolist(),[[2.0,3.0,4.0],[5.0,1.0,6.0]])
+        pass
+
     def setUp(self):
         pass
     pass