Depth Bar Chart

The following is the command line version of the code in "cppdemo/depthbar". The MFC version of the code is in "mfcdemo/mfcdemo". The Qt Widgets version of the code is in "qtdemo/qtdemo". The QML/Qt Quick version of the code is in "qmldemo/qmldemo".

#include "chartdir.h"

int main(int argc, char *argv[])
{
    // The data for the bar chart
    double data0[] = {100, 125, 245, 147, 67};
    const int data0_size = (int)(sizeof(data0)/sizeof(*data0));
    double data1[] = {85, 156, 179, 211, 123};
    const int data1_size = (int)(sizeof(data1)/sizeof(*data1));
    double data2[] = {97, 87, 56, 267, 157};
    const int data2_size = (int)(sizeof(data2)/sizeof(*data2));

    // The labels for the bar chart
    const char* labels[] = {"Mon", "Tue", "Wed", "Thu", "Fri"};
    const int labels_size = (int)(sizeof(labels)/sizeof(*labels));

    // Create a XYChart object of size 500 x 320 pixels
    XYChart* c = new XYChart(500, 320);

    // Set the plotarea at (100, 40) and of size 280 x 240 pixels
    c->setPlotArea(100, 40, 280, 240);

    // Add a legend box at (405, 100)
    c->addLegend(405, 100);

    // Add a title to the chart
    c->addTitle("Weekday Network Load");

    // Add a title to the y axis. Draw the title upright (font angle = 0)
    c->yAxis()->setTitle("Average\nWorkload\n(MBytes\nPer Hour)")->setFontAngle(0);

    // Set the labels on the x axis
    c->xAxis()->setLabels(StringArray(labels, labels_size));

    // Add three bar layers, each representing one data set. The bars are drawn in semi-transparent
    // colors.
    c->addBarLayer(DoubleArray(data0, data0_size), 0x808080ff, "Server # 1", 5);
    c->addBarLayer(DoubleArray(data1, data1_size), 0x80ff0000, "Server # 2", 5);
    c->addBarLayer(DoubleArray(data2, data2_size), 0x8000ff00, "Server # 3", 5);

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

    //free up resources
    delete c;

    return 0;
}