Method PrepareAlgorithmRequests

Filters/ParallelStatistics/vtkGenerateStatistics.cxx:1305–1334

}

void vtkGenerateStatistics::PrepareAlgorithmRequests(
  const std::vector<vtkSmartPointer<vtkAbstractArray>>& columns)
{
  int mm = static_cast<int>(columns.size());
  int nn = this->StatisticsAlgorithm->GetMaximumNumberOfColumnsPerRequest();
  this->StatisticsAlgorithm->ResetRequests();
  if (nn > 0 && mm > nn)
  {
    auto* combo = vtkMath::BeginCombination(mm, nn);
    for (int more = 1; more && combo; more = vtkMath::NextCombination(mm, nn, combo))
    {
      this->StatisticsAlgorithm->ResetAllColumnStates();
      for (int ii = 0; ii < nn; ++ii)
      {
        this->StatisticsAlgorithm->SetColumnStatus(columns[combo[ii]]->GetName(), true);
      }
      this->StatisticsAlgorithm->RequestSelectedColumns();
    }
    vtkMath::FreeCombination(combo);
  }
  else
  {
    this->StatisticsAlgorithm->ResetAllColumnStates();
    for (const auto& column : columns)
    {
      this->StatisticsAlgorithm->SetColumnStatus(column->GetName(), true);
    }
    this->StatisticsAlgorithm->RequestSelectedColumns();
  }
}

vtkIdType vtkGenerateStatistics::GetNumberOfObservationsForTraining(vtkIdType N)
{