1 #-*-coding:iso-8859-1-*-
3 # Copyright (C) 2008-2012 EDF R&D
5 # This library is free software; you can redistribute it and/or
6 # modify it under the terms of the GNU Lesser General Public
7 # License as published by the Free Software Foundation; either
8 # version 2.1 of the License.
10 # This library is distributed in the hope that it will be useful,
11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 # Lesser General Public License for more details.
15 # You should have received a copy of the GNU Lesser General Public
16 # License along with this library; if not, write to the Free Software
17 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 # See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
21 # Author: Jean-Philippe Argaud, jean-philippe.argaud@edf.fr, EDF R&D
24 from daCore import BasicObjects, PlatformInfo
25 m = PlatformInfo.SystemUsage()
29 # ==============================================================================
30 class ElementaryAlgorithm(BasicObjects.Algorithm):
32 BasicObjects.Algorithm.__init__(self, "LINEARLEASTSQUARES")
33 self.defineRequiredParameter(
34 name = "StoreSupplementaryCalculations",
37 message = "Liste de calculs supplémentaires à stocker et/ou effectuer",
41 def run(self, Xb=None, Y=None, H=None, M=None, R=None, B=None, Q=None, Parameters=None):
43 Calcul de l'estimateur moindres carrés pondérés linéaires
44 (assimilation variationnelle sans ébauche)
46 logging.debug("%s Lancement"%self._name)
47 logging.debug("%s Taille mémoire utilisée de %.1f Mo"%(self._name, m.getUsedMemory("M")))
49 # Paramètres de pilotage
50 # ----------------------
51 self.setParameters(Parameters)
53 # Opérateur d'observation
54 # -----------------------
55 Hm = H["Tangent"].asMatrix(None)
56 Ha = H["Adjoint"].asMatrix(None)
60 elif self._parameters["R_scalar"] is not None:
61 RI = 1.0 / self._parameters["R_scalar"]
63 raise ValueError("Observation error covariance matrix has to be properly defined!")
65 # Calcul de la matrice de gain et de l'analyse
66 # --------------------------------------------
67 K = (Ha * RI * Hm ).I * Ha * RI
69 logging.debug("%s Analyse Xa = %s"%(self._name, Xa))
71 # Calcul de la fonction coût
72 # --------------------------
75 Jo = 0.5 * oma.T * RI * oma
76 J = float( Jb ) + float( Jo )
77 logging.debug("%s CostFunction Jb = %s"%(self._name, Jb))
78 logging.debug("%s CostFunction Jo = %s"%(self._name, Jo))
79 logging.debug("%s CostFunction J = %s"%(self._name, J))
81 self.StoredVariables["Analysis"].store( Xa.A1 )
82 self.StoredVariables["CostFunctionJb"].store( Jb )
83 self.StoredVariables["CostFunctionJo"].store( Jo )
84 self.StoredVariables["CostFunctionJ" ].store( J )
86 # Calculs et/ou stockages supplémentaires
87 # ---------------------------------------
88 if "OMA" in self._parameters["StoreSupplementaryCalculations"]:
89 self.StoredVariables["OMA"].store( numpy.asmatrix(oma).flatten().A1 )
91 logging.debug("%s Taille mémoire utilisée de %.1f Mo"%(self._name, m.getUsedMemory("M")))
92 logging.debug("%s Terminé"%self._name)
96 # ==============================================================================
97 if __name__ == "__main__":
98 print '\n AUTODIAGNOSTIC \n'