vtkReduceTable.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkReduceTable.h
 
  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
 
     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.
 
=========================================================================*/
#ifndef vtkReduceTable_h
#define vtkReduceTable_h
 
#include "vtkInfovisCoreModule.h" // For export macro
#include "vtkTableAlgorithm.h"
 
#include <map>    // For ivar
#include <set>    // For ivar
#include <vector> // For ivar
 
class vtkVariant;
 
class VTKINFOVISCORE_EXPORT vtkReduceTable : public vtkTableAlgorithm
{
public:
  static vtkReduceTable* New();
  vtkTypeMacro(vtkReduceTable, vtkTableAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
 
  vtkGetMacro(IndexColumn, vtkIdType);
  vtkSetMacro(IndexColumn, vtkIdType);
 
 
  vtkGetMacro(NumericalReductionMethod, int);
  vtkSetMacro(NumericalReductionMethod, int);
 
 
  vtkGetMacro(NonNumericalReductionMethod, int);
  vtkSetMacro(NonNumericalReductionMethod, int);
 
  int GetReductionMethodForColumn(vtkIdType col);
 
  void SetReductionMethodForColumn(vtkIdType col, int method);
 
  enum
  {
    MEAN,
    MEDIAN,
    MODE
  };
 
protected:
  vtkReduceTable();
  ~vtkReduceTable() override;
 
  int RequestData(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
 
  void InitializeOutputTable(vtkTable* input, vtkTable* output);
 
  void AccumulateIndexValues(vtkTable* input);
 
  void PopulateIndexColumn(vtkTable* output);
 
  void PopulateDataColumn(vtkTable* input, vtkTable* output, vtkIdType col);
 
  void ReduceValuesToMean(vtkTable* input, vtkTable* output, vtkIdType row, vtkIdType col,
    std::vector<vtkIdType> oldRows);
 
  void ReduceValuesToMedian(vtkTable* input, vtkTable* output, vtkIdType row, vtkIdType col,
    std::vector<vtkIdType> oldRows);
 
  void ReduceValuesToMode(vtkTable* input, vtkTable* output, vtkIdType row, vtkIdType col,
    std::vector<vtkIdType> oldRows);
 
  vtkIdType IndexColumn;
  std::set<vtkVariant> IndexValues;
  std::map<vtkVariant, std::vector<vtkIdType>> NewRowToOldRowsMap;
  std::map<vtkIdType, int> ColumnReductionMethods;
 
  int NumericalReductionMethod;
  int NonNumericalReductionMethod;
 
private:
  vtkReduceTable(const vtkReduceTable&) = delete;
  void operator=(const vtkReduceTable&) = delete;
};
 
#endif