Method ReduceValuesToMean

Infovis/Core/vtkReduceTable.cxx:189–205

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//------------------------------------------------------------------------------
void vtkReduceTable::ReduceValuesToMean(
  vtkTable* input, vtkTable* output, vtkIdType row, vtkIdType col, std::vector<vtkIdType> oldRows)
{
  if (!input->GetValue(0, col).IsNumeric())
  {
    vtkErrorMacro(<< "Mean is unsupported for non-numerical data");
    return;
  }

  double mean = 0.0;
  for (std::vector<vtkIdType>::iterator itr = oldRows.begin(); itr != oldRows.end(); ++itr)
  {
    mean += input->GetValue(*itr, col).ToDouble();
  }
  mean /= oldRows.size();
  output->SetValue(row, col, vtkVariant(mean));
}

//------------------------------------------------------------------------------
void vtkReduceTable::ReduceValuesToMedian(