ChartDirector Ver 3.0 (C++ Edition)

Box-Whisker Chart (2)




This example creating a horizontal box-whisker chart. The box-whisker layer is created using XYChart.addBoxWhiskerLayer, and the chart is set to horizontal using XYChart.swapXY.

Source Code Listing

[The following project is available in "cppdemo/boxwhisker2".]
#include "chartdir.h" int main(int argc, char *argv[]) { //Sample data for the Box-Whisker chart. Represents the minimum, 1st //quartile, medium, 3rd quartile and maximum values of some quantities double Q0Data[] = {40, 45, 35}; double Q1Data[] = {55, 60, 50}; double Q2Data[] = {62, 70, 60}; double Q3Data[] = {70, 80, 65}; double Q4Data[] = {80, 90, 75}; //The labels for the chart const char *labels[] = {"<*img=robot1.png*>\nBipedal Type", "<*img=robot2.png*>\nWolf Type", "<*img=robot5.png*>\nBird Type"}; //Create a XYChart object of size 540 x 320 pixels XYChart *c = new XYChart(540, 320); //swap the x and y axes to create a horizontal box-whisker chart c->swapXY(); //Set the plotarea at (75, 25) and of size 440 x 270 pixels. Enable both //horizontal and vertical grids by setting their colors to grey (0xc0c0c0) c->setPlotArea(75, 25, 440, 270)->setGridColor(0xc0c0c0, 0xc0c0c0); //Add a title to the chart c->addTitle(" Robot Shooting Accuracy Scores"); //Set the labels on the x axis and the font to Arial Bold c->xAxis()->setLabels(StringArray(labels, sizeof(labels)/sizeof(*labels)) )->setFontStyle("arialbd.ttf"); //Disable x axis ticks by setting the length to 0 c->xAxis()->setTickLength(0); //Set the font for the y axis labels to Arial Bold c->yAxis()->setLabelStyle("arialbd.ttf"); //Add a Box Whisker layer using light blue 0x9999ff as the fill color and //blue (0xcc) as the line color. Set the line width to 2 pixels c->addBoxWhiskerLayer(DoubleArray(Q3Data, sizeof(Q3Data)/sizeof(*Q3Data)), DoubleArray(Q1Data, sizeof(Q1Data)/sizeof(*Q1Data)), DoubleArray(Q4Data, sizeof(Q4Data)/sizeof(*Q4Data)), DoubleArray(Q0Data, sizeof(Q0Data)/sizeof(*Q0Data)), DoubleArray(Q2Data, sizeof(Q2Data)/sizeof(*Q2Data)), 0x9999ff, 0xcc)->setLineWidth(2); //output the chart c->makeChart("boxwhisker2.png"); //free up resources delete c; return 0; }