ChartDirector 6.0 (C++ Edition)

Borderless Bar Chart




This example demonstrates a horizontal bar chart with no axes, grid lines or and plot area border. It also demonstrates using gradient colors for the bars, and a number of other ChartDirector features.

The key features demonstrated in this example are:

Source Code Listing

[The following code is available in "cppdemo/hbar". 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 bar chart
    double data[] = {3.9, 8.1, 10.9, 14.2, 18.1, 19.0, 21.2, 23.2, 25.7, 36};

    // The labels for the bar chart
    const char *labels[] = {"Bastic Group", "Simpa", "YG Super", "CID", "Giga Tech", "Indo Digital",
        "Supreme", "Electech", "THP Thunder", "Flash Light"};

    // Create a XYChart object of size 600 x 250 pixels
    XYChart *c = new XYChart(600, 250);

    // Add a title to the chart using Arial Bold Italic font
    c->addTitle("Revenue Estimation - Year 2002", "arialbi.ttf");

    // Set the plotarea at (100, 30) and of size 400 x 200 pixels. Set the plotarea border,
    // background and grid lines to Transparent
    c->setPlotArea(100, 30, 400, 200, Chart::Transparent, Chart::Transparent, Chart::Transparent,
        Chart::Transparent, Chart::Transparent);

    // Add a bar chart layer using the given data. Use a gradient color for the bars, where the
    // gradient is from dark green (0x008000) to white (0xffffff)
    BarLayer *layer = c->addBarLayer(DoubleArray(data, (int)(sizeof(data) / sizeof(data[0]))),
        c->gradientColor(100, 0, 500, 0, 0x008000, 0xffffff));

    // Swap the axis so that the bars are drawn horizontally
    c->swapXY(true);

    // Set the bar gap to 10%
    layer->setBarGap(0.1);

    // Use the format "US$ xxx millions" as the bar label
    layer->setAggregateLabelFormat("US$ {value} millions");

    // Set the bar label font to 10pt Times Bold Italic/dark red (0x663300)
    layer->setAggregateLabelStyle("timesbi.ttf", 10, 0x663300);

    // Set the labels on the x axis
    TextBox *textbox = c->xAxis()->setLabels(StringArray(labels, (int)(sizeof(labels) / sizeof(
        labels[0]))));

    // Set the x axis label font to 10pt Arial Bold Italic
    textbox->setFontStyle("arialbi.ttf");
    textbox->setFontSize(10);

    // Set the x axis to Transparent, with labels in dark red (0x663300)
    c->xAxis()->setColors(Chart::Transparent, 0x663300);

    // Set the y axis and labels to Transparent
    c->yAxis()->setColors(Chart::Transparent, Chart::Transparent);

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

    //free up resources
    delete c;
    return 0;
}