StackedBar

VTKExamples/Cxx/Plotting/StackedBar


Code

StackedBar.cxx

#include <vtkSmartPointer.h>

#include <vtkRenderer.h>
#include <vtkRenderWindow.h>
#include <vtkChartXY.h>
#include <vtkChartLegend.h>
#include <vtkPlotBar.h>
#include <vtkAxis.h>
#include <vtkTable.h>
#include <vtkIntArray.h>
#include <vtkDoubleArray.h>
#include <vtkStringArray.h>
#include <vtkTextProperty.h>
#include <vtkContextView.h>
#include <vtkContextScene.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkColorSeries.h>

const int num_months = 12;

static const int month[] = {1,2,3,4,5,6,7,8,9,10,11,12};

static const int book_2008[] =  {5675, 5902, 6388, 5990, 5575, 7393, 9878, 8082, 6417, 5946, 5526, 5166};
static const int new_popular_2008[] =  {701, 687, 736, 696, 750, 814, 923, 860, 786, 735, 680, 741};
static const int periodical_2008[] =  {184, 176, 166, 131, 171, 191, 231, 166, 197, 162, 152, 143};
static const int audiobook_2008[] =  {903, 1038, 987, 1073, 1144, 1203, 1173, 1196, 1213, 1076, 926, 874};
static const int video_2008[] =  {1524, 1565, 1627, 1445, 1179, 1816, 2293, 1811, 1588, 1561, 1542, 1563};

static const int book_2009[] =  {6388, 5990, 5575, 9878, 8082, 5675, 7393, 5902, 5526, 5166, 5946, 6417};
static const int new_popular_2009[] =  {696, 735, 786, 814, 736, 860, 750, 687, 923, 680, 741, 701};
static const int periodical_2009[] =  {197, 166, 176, 231, 171, 152, 166, 131, 184, 191, 143, 162};
static const int audiobook_2009[] =  {1213, 1076, 926, 987, 903, 1196, 1073, 1144, 1203, 1038, 874, 1173};
static const int video_2009[] =  {2293, 1561, 1542, 1627, 1588, 1179, 1563, 1445, 1811, 1565, 1524, 1816};

static void build_array(const char *name, vtkIntArray *array, const int c_array[])
{
  array->SetName(name);
  for (int i = 0; i < num_months; ++i)
  {
    array->InsertNextValue(c_array[i]);
  }
}

//----------------------------------------------------------------------------
int main(int , char * [])
{
  // Set up a 2D scene, add an XY chart to it
  vtkSmartPointer<vtkContextView> view =
    vtkSmartPointer<vtkContextView>::New();
  view->GetRenderWindow()->SetSize(500, 350);
  vtkSmartPointer<vtkChartXY> chart =
    vtkSmartPointer<vtkChartXY>::New();
  view->GetScene()->AddItem(chart);

  // Create a table with some points in it...
  vtkSmartPointer<vtkTable> table =
    vtkSmartPointer<vtkTable>::New();

  vtkSmartPointer<vtkIntArray> arrMonth =
    vtkSmartPointer<vtkIntArray>::New();
  build_array("Month", arrMonth, month);
  table->AddColumn(arrMonth);

  vtkSmartPointer<vtkIntArray> arrBooks2008 =
    vtkSmartPointer<vtkIntArray>::New();
  build_array("Books 2008", arrBooks2008, book_2008);
  table->AddColumn(arrBooks2008);
  vtkSmartPointer<vtkIntArray>arrNewPopular2008 =
    vtkSmartPointer<vtkIntArray>::New();
  build_array("New / Popular 2008", arrNewPopular2008, new_popular_2008);
  table->AddColumn(arrNewPopular2008);
  vtkSmartPointer<vtkIntArray>arrPeriodical2008 =
    vtkSmartPointer<vtkIntArray>::New();
  build_array("Periodical 2008", arrPeriodical2008, periodical_2008);
  table->AddColumn(arrPeriodical2008);
  vtkSmartPointer<vtkIntArray>arrAudiobook2008 =
    vtkSmartPointer<vtkIntArray>::New();
  build_array("Audiobook 2008", arrAudiobook2008, audiobook_2008);
  table->AddColumn(arrAudiobook2008);
  vtkSmartPointer<vtkIntArray> arrVideo2008 =
    vtkSmartPointer<vtkIntArray>::New();
  build_array("Video 2008", arrVideo2008, video_2008);
  table->AddColumn(arrVideo2008);

  vtkSmartPointer<vtkIntArray>arrBooks2009 =
    vtkSmartPointer<vtkIntArray>::New();
  build_array("Books 2009", arrBooks2009, book_2009);
  table->AddColumn(arrBooks2009);
  vtkSmartPointer<vtkIntArray> arrNewPopular2009 =
    vtkSmartPointer<vtkIntArray>::New();
  build_array("New / Popular 2009", arrNewPopular2009, new_popular_2009);
  table->AddColumn(arrNewPopular2009);
  vtkSmartPointer<vtkIntArray> arrPeriodical2009 =
    vtkSmartPointer<vtkIntArray>::New();
  build_array("Periodical 2009", arrPeriodical2009, periodical_2009);
  table->AddColumn(arrPeriodical2009);
  vtkSmartPointer<vtkIntArray>arrAudiobook2009 =
    vtkSmartPointer<vtkIntArray>::New();
  build_array("Audiobook 2009", arrAudiobook2009, audiobook_2009);
  table->AddColumn(arrAudiobook2009);
  vtkSmartPointer<vtkIntArray> arrVideo2009 =
    vtkSmartPointer<vtkIntArray>::New();
  build_array("Video 2009", arrVideo2009, video_2009);
  table->AddColumn(arrVideo2009);

  // Create a color series to use with our stacks.
  vtkSmartPointer<vtkColorSeries> colorSeries1 =
    vtkSmartPointer<vtkColorSeries>::New();
  colorSeries1->SetColorScheme(vtkColorSeries::WILD_FLOWER);

  // Add multiple line plots, setting the colors etc
  vtkPlotBar *bar = 0;

  bar = vtkPlotBar::SafeDownCast(chart->AddPlot(vtkChart::BAR));
  bar->SetColorSeries(colorSeries1);
  bar->SetInputData(table, "Month", "Books 2008");
  bar->SetInputArray(2,"New / Popular 2008");
  bar->SetInputArray(3,"Periodical 2008");
  bar->SetInputArray(4,"Audiobook 2008");
  bar->SetInputArray(5,"Video 2008");

  vtkSmartPointer<vtkColorSeries> colorSeries2 =
    vtkSmartPointer<vtkColorSeries>::New();
  colorSeries2->SetColorScheme(vtkColorSeries::WILD_FLOWER);

  bar = vtkPlotBar::SafeDownCast(chart->AddPlot(vtkChart::BAR));
  bar->SetColorSeries(colorSeries2);
  bar->SetInputData(table, "Month", "Books 2009");
  bar->SetInputArray(2,"New / Popular 2009");
  bar->SetInputArray(3,"Periodical 2009");
  bar->SetInputArray(4,"Audiobook 2009");
  bar->SetInputArray(5,"Video 2009");

  chart->SetShowLegend(true);
  vtkAxis *axis = chart->GetAxis(vtkAxis::BOTTOM);
  axis->SetBehavior(1);
  axis->SetMaximum(13.0);
  axis->SetTitle("Month");
  chart->GetAxis(vtkAxis::LEFT)->SetTitle("");
  chart->SetTitle("Circulation 2008, 2009");

  // Set up the legend to be off to the top right of the viewport.
  chart->GetLegend()->SetInline(false);
  chart->GetLegend()->SetHorizontalAlignment(vtkChartLegend::RIGHT);
  chart->GetLegend()->SetVerticalAlignment(vtkChartLegend::TOP);

  // Set up some custom labels for months.
  vtkSmartPointer<vtkDoubleArray> dates =
      vtkSmartPointer<vtkDoubleArray>::New();
  vtkSmartPointer<vtkStringArray> strings =
      vtkSmartPointer<vtkStringArray>::New();
  dates->InsertNextValue(1);
  strings->InsertNextValue("January");
  dates->InsertNextValue(2);
  strings->InsertNextValue("February");
  dates->InsertNextValue(3);
  strings->InsertNextValue("March");
  dates->InsertNextValue(4);
  strings->InsertNextValue("April");
  dates->InsertNextValue(5);
  strings->InsertNextValue("May");
  dates->InsertNextValue(6);
  strings->InsertNextValue("June");
  dates->InsertNextValue(7);
  strings->InsertNextValue("July");
  dates->InsertNextValue(8);
  strings->InsertNextValue("August");
  dates->InsertNextValue(9);
  strings->InsertNextValue("September");
  dates->InsertNextValue(10);
  strings->InsertNextValue("October");
  dates->InsertNextValue(11);
  strings->InsertNextValue("November");
  dates->InsertNextValue(12);
  strings->InsertNextValue("December");
  axis->SetCustomTickPositions(dates, strings);
  axis->GetLabelProperties()->SetOrientation(90);
  axis->GetLabelProperties()->SetVerticalJustification(VTK_TEXT_CENTERED);
  axis->GetLabelProperties()->SetJustification(VTK_TEXT_RIGHT);

  //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;
}

CMakeLists.txt

cmake_minimum_required(VERSION 2.8)

PROJECT(StackedBar)

find_package(VTK REQUIRED)
include(${VTK_USE_FILE})

add_executable(StackedBar MACOSX_BUNDLE StackedBar.cxx )

target_link_libraries(StackedBar ${VTK_LIBRARIES})

Download and Build StackedBar

Click here to download StackedBar and its CMakeLists.txt file. Once the tarball StackedBar.tar has been downloaded and extracted,

cd StackedBar/build 

If VTK is installed:

cmake ..

If VTK is not installed but compiled on your system, you will need to specify the path to your VTK build:

cmake -DVTK_DIR:PATH=/home/me/vtk_build ..

Build the project:

make

and run it:

./StackedBar

WINDOWS USERS

Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.