VTK/Examples/Cxx/Plotting/BarChart

#include <vtkVersion.h>
#include <vtkRenderer.h>
#include <vtkRenderWindow.h>
#include <vtkSmartPointer.h>
#include <vtkChartXY.h>
#include <vtkPlot.h>
#include <vtkTable.h>
#include <vtkIntArray.h>
#include <vtkContextView.h>
#include <vtkContextScene.h>
#include <vtkRenderWindowInteractor.h>
 
#define VTK_CREATE(type, name) \
  vtkSmartPointer<type> name = vtkSmartPointer<type>::New()
 
 
// Monthly circulation data
static int data_2008[] = {10822, 10941, 9979, 10370, 9460, 11228, 15093, 12231, 10160, 9816, 9384, 7892};
static int data_2009[] = {9058, 9474, 9979, 9408, 8900, 11569, 14688, 12231, 10294, 9585, 8957, 8590};
static int data_2010[] = {9058, 10941, 9979, 10270, 8900, 11228, 14688, 12231, 10160, 9585, 9384, 8590};
 
int main(int, char*[] )
{
  // Set up a 2D scene, add an XY chart to it
  VTK_CREATE(vtkContextView, view);
  view->GetRenderer()->SetBackground(1.0, 1.0, 1.0);
  view->GetRenderWindow()->SetSize(400, 300);
  VTK_CREATE(vtkChartXY, chart);
  view->GetScene()->AddItem(chart);
 
  // Create a table with some points in it...
  VTK_CREATE(vtkTable, table);
 
  VTK_CREATE(vtkIntArray, arrMonth);
  arrMonth->SetName("Month");
  table->AddColumn(arrMonth);
 
  VTK_CREATE(vtkIntArray, arr2008);
  arr2008->SetName("2008");
  table->AddColumn(arr2008);
 
  VTK_CREATE(vtkIntArray, arr2009);
  arr2009->SetName("2009");
  table->AddColumn(arr2009);
 
  VTK_CREATE(vtkIntArray, arr2010);
  arr2010->SetName("2010");
  table->AddColumn(arr2010);
 
  table->SetNumberOfRows(12);
  for (int i = 0; i < 12; i++)
    {
    table->SetValue(i,0,i+1);
    table->SetValue(i,1,data_2008[i]);
    table->SetValue(i,2,data_2009[i]);
    table->SetValue(i,3,data_2010[i]);
    }
 
  // Add multiple line plots, setting the colors etc
  vtkPlot *line = 0;
 
  line = chart->AddPlot(vtkChart::BAR);
#if VTK_MAJOR_VERSION <= 5
  line->SetInput(table, 0, 1);
#else
  line->SetInputData(table, 0, 1);
#endif
  line->SetColor(0, 255, 0, 255);
 
  line = chart->AddPlot(vtkChart::BAR);
#if VTK_MAJOR_VERSION <= 5
  line->SetInput(table, 0, 2);
#else
  line->SetInputData(table, 0, 2);
#endif
  line->SetColor(255, 0, 0, 255);
 
  line = chart->AddPlot(vtkChart::BAR);
#if VTK_MAJOR_VERSION <= 5
  line->SetInput(table, 0, 3);
#else
  line->SetInputData(table, 0, 3);
#endif
  line->SetColor(0, 0, 255, 255);
 
  //Finally render the scene and compare the image to a reference image
  view->GetRenderWindow()->SetMultiSamples(0);
  view->GetInteractor()->Initialize();
  view->GetInteractor()->Start();
 
  return EXIT_SUCCESS;
}