Op_Ecart_type.cpp

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#include <Schema_Temps_base.h>
#include <Op_Ecart_type.h>
#include <Probleme_base.h>
 
Implemente_instanciable(Op_Ecart_type, "Op_Ecart_type", Operateur_Statistique_tps_base);
 
Sortie& Op_Ecart_type::printOn(Sortie& s) const
{
  return s << que_suis_je() << " " << le_nom();
}
 
Entree& Op_Ecart_type::readOn(Entree& s)
{
  return s;
}
 
void Op_Ecart_type::completer(const Probleme_base& Pb, const Nom& prefix)
{
  Nom nom_pour_post = "Ecart_type_";
 
  const OBS_PTR(Champ_Generique_base) &mon_champ = integrale_carre_champ_.le_champ();
  const Noms noms = mon_champ->get_property("nom");
  nom_pour_post += Motcle(noms[0]);
 
  integrale_carre_champ_.le_champ_calcule().nommer(nom_pour_post);
 
  Nom pdi_name = prefix + nom_pour_post;
  integrale_carre_champ_.le_champ_calcule().set_pdi_name(pdi_name);
 
  if (la_moyenne_)
    integrale_champ_ = moyenne().integrale();
 
  // Sizing the integrale_champ field to the same size as mon_champ
  OWN_PTR(Champ_base) espace_stockage_source;
  const Champ_base& source = mon_champ->get_champ(espace_stockage_source);
  const DoubleTab& tab1 = source.valeurs();
 
  // Initialization of the val array structure.
  //  Is this the right place to do it? (rather in integrale_carre_champ?)
  integrale_carre_champ_.le_champ_calcule().associer_domaine_dis_base(Pb.domaine_dis());
  int nb_comp = source.nb_comp();
  integrale_carre_champ_.le_champ_calcule().fixer_nb_comp(nb_comp);
  DoubleTab& val = valeurs_carre();
  val.reset();
  val = tab1;
  val = 0.;
 
  if (nb_comp == 1)
    integrale_carre_champ_.le_champ_calcule().fixer_unite(source.unite());
  else
    integrale_carre_champ_.le_champ_calcule().fixer_unites(source.unites());
 
  integrale_carre_champ_.le_champ_calcule().changer_temps(Pb.schema_temps().temps_courant());
}
 
DoubleTab Op_Ecart_type::calculer_valeurs() const
{
  double dt = dt_integration();
  if (!est_egal(dt, dt_integration_carre()))
    {
      Cerr << "Not implemented yet in Op_Ecart_type::calculer_valeurs()" << finl;
      exit();
    }
  DoubleTrav ecart_type(valeurs_carre());
  ecart_type = valeurs_carre();
  if (dt > 0)
    {
      ecart_type *= dt;                      // sum(I^2)*dt
      ecart_type.ajoute_carre(-1, valeurs()); // sum(I^2)*dt-sum(I)^2
      ecart_type /= (dt * dt);                 // sum(I^2)/dt-(sum(I)/dt)^2)
      ecart_type.abs();                      // To avoid negative number ?
      ecart_type.racine_carree();            // sqrt(mean(I^2)-mean(I)^2)
    }
  return ecart_type;
}