StackedBar
Question
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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 = dynamic_cast<vtkPlotBar*>(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 = dynamic_cast<vtkPlotBar*>(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->GetRenderWindow()->Render();
view->GetInteractor()->Initialize();
view->GetInteractor()->Start();
return EXIT_SUCCESS;
}
CMakeLists.txt¶
cmake_minimum_required(VERSION 3.3 FATAL_ERROR)
project(StackedBar)
find_package(VTK COMPONENTS
vtkvtkChartsCore
vtkvtkCommonColor
vtkvtkCommonCore
vtkvtkCommonDataModel
vtkvtkInteractionStyle
vtkvtkRenderingContext2D
vtkvtkRenderingContextOpenGL2
vtkvtkRenderingCore
vtkvtkRenderingFreeType
vtkvtkRenderingGL2PSOpenGL2
vtkvtkRenderingOpenGL2
vtkvtkViewsContext2D QUIET)
if (NOT VTK_FOUND)
message("Skipping StackedBar: ${VTK_NOT_FOUND_MESSAGE}")
return ()
endif()
message (STATUS "VTK_VERSION: ${VTK_VERSION}")
if (VTK_VERSION VERSION_LESS "8.90.0")
# old system
include(${VTK_USE_FILE})
add_executable(StackedBar MACOSX_BUNDLE StackedBar.cxx )
target_link_libraries(StackedBar PRIVATE ${VTK_LIBRARIES})
else ()
# include all components
add_executable(StackedBar MACOSX_BUNDLE StackedBar.cxx )
target_link_libraries(StackedBar PRIVATE ${VTK_LIBRARIES})
# vtk_module_autoinit is needed
vtk_module_autoinit(
TARGETS StackedBar
MODULES ${VTK_LIBRARIES}
)
endif ()
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.