ChartDirector 6.0 (C++ Edition)

Cone Chart




This example demonstrates using PyramidChart.setConeSize to specify using a cone instead of a pyramid to represent the data.

Source Code Listing

[The following code is available in "cppdemo/cone". A MFC version of the code is available in "mfcdemo/mfcdemo" (Windows edition only). A QT version of the code is available in "qtdemo/qtdemo".]
#include "chartdir.h"

int main(int argc, char *argv[])
{
    // The data for the pyramid chart
    double data[] = {156, 123, 211, 179};

    // The labels for the pyramid chart
    const char *labels[] = {"Funds", "Bonds", "Stocks", "Cash"};

    // The semi-transparent colors for the pyramid layers
    int colors[] = {0x60000088, 0x6066aaee, 0x60ffbb00, 0x60ee6622};

    // Create a PyramidChart object of size 480 x 400 pixels
    PyramidChart *c = new PyramidChart(480, 400);

    // Set the cone center at (280, 180), and width x height to 150 x 300 pixels
    c->setConeSize(280, 180, 150, 300);

    // Set the elevation to 15 degrees
    c->setViewAngle(15);

    // Set the pyramid data and labels
    c->setData(DoubleArray(data, (int)(sizeof(data) / sizeof(data[0]))), StringArray(labels, (int)(
        sizeof(labels) / sizeof(labels[0]))));

    // Set the layer colors to the given colors
    c->setColors(Chart::DataColor, IntArray(colors, (int)(sizeof(colors) / sizeof(colors[0]))));

    // Leave 1% gaps between layers
    c->setLayerGap(0.01);

    // Add labels at the left side of the pyramid layers using Arial Bold font. The labels will have
    // 3 lines showing the layer name, value and percentage.
    c->setLeftLabel("{label}\nUS ${value}K\n({percent}%)", "arialbd.ttf");

    // Output the chart
    c->makeChart("cone.png");

    //free up resources
    return 0;
}