Method GenerateContinuousDataLookupTable

Views/Infovis/vtkHeatmapItem.cxx:214–244

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//------------------------------------------------------------------------------
void vtkHeatmapItem::GenerateContinuousDataLookupTable()
{
  this->ContinuousDataLookupTable->SetNumberOfTableValues(255);
  this->ContinuousDataLookupTable->Build();
  this->ContinuousDataLookupTable->SetRange(0, 255);
  this->ContinuousDataLookupTable->SetNanColor(0.75, 0.75, 0.75, 1.0);

  // black to red
  for (int i = 0; i < 85; ++i)
  {
    float f = static_cast<float>(i) / 84.0;
    this->ContinuousDataLookupTable->SetTableValue(i, f, 0, 0);
  }

  // red to yellow
  for (int i = 0; i < 85; ++i)
  {
    float f = static_cast<float>(i) / 84.0;
    this->ContinuousDataLookupTable->SetTableValue(85 + i, 1.0, f, 0);
  }

  // yellow to white
  for (int i = 0; i < 85; ++i)
  {
    float f = static_cast<float>(i) / 84.0;
    this->ContinuousDataLookupTable->SetTableValue(170 + i, 1.0, 1.0, f);
  }

  this->ColorLegendLookupTable->DeepCopy(this->ContinuousDataLookupTable);
  this->ColorLegend->SetTransferFunction(this->ColorLegendLookupTable);
}

//------------------------------------------------------------------------------
void vtkHeatmapItem::AccumulateProminentCategoricalDataValues(vtkIdType column)