ChartDirector 6.0 (C++ Edition)

Candlestick Chart




This example demonstrates a candlestick chart.

Source Code Listing

[The following code is available in "cppdemo/candlestick". 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[])
{
    //
    // Sample data for the CandleStick chart.
    //
    double highData[] = {2043, 2039, 2076, 2064, 2048, 2058, 2070, 2033, 2027, 2029, 2071, 2085,
        2034, 2031, 2056, 2128, 2180, 2183, 2192, 2213, 2230, 2281, 2272};

    double lowData[] = {1931, 1921, 1985, 2028, 1986, 1994, 1999, 1958, 1943, 1944, 1962, 2011,
        1975, 1962, 1928, 2059, 2112, 2103, 2151, 2127, 2123, 2152, 2212};

    double openData[] = {2000, 1957, 1993, 2037, 2018, 2021, 2045, 2009, 1959, 1985, 2008, 2048,
        2006, 2010, 1971, 2080, 2116, 2137, 2170, 2172, 2171, 2191, 2240};

    double closeData[] = {1950, 1991, 2026, 2029, 2004, 2053, 2011, 1962, 1987, 2019, 2040, 2016,
        1996, 1985, 2006, 2113, 2142, 2167, 2158, 2201, 2188, 2231, 2242};

    // The labels for the CandleStick chart
    const char *labels[] = {"Mon 1", "Tue 2", "Wed 3", "Thu 4", "Fri 5", "Mon 8", "Tue 9", "Wed 10",
        "Thu 11", "Fri 12", "Mon 15", "Tue 16", "Wed 17", "Thu 18", "Fri 19", "Mon 22", "Tue 23",
        "Wed 24", "Thu 25", "Fri 26", "Mon 29", "Tue 30", "Wed 31"};

    // Create a XYChart object of size 600 x 350 pixels
    XYChart *c = new XYChart(600, 350);

    // Set the plotarea at (50, 25) and of size 500 x 250 pixels. Enable both the horizontal and
    // vertical grids by setting their colors to grey (0xc0c0c0)
    c->setPlotArea(50, 25, 500, 250)->setGridColor(0xc0c0c0, 0xc0c0c0);

    // Add a title to the chart
    c->addTitle("Universal Stock Index on Jan 2001");

    // Add a custom text at (50, 25) (the upper left corner of the plotarea). Use 12pt Arial
    // Bold/blue (4040c0) as the font.
    c->addText(50, 25, "(c) Global XYZ ABC Company", "arialbd.ttf", 12, 0x4040c0);

    // Add a title to the x axis
    c->xAxis()->setTitle("Jan 2001");

    // Set the labels on the x axis. Rotate the labels by 45 degrees.
    c->xAxis()->setLabels(StringArray(labels, (int)(sizeof(labels) / sizeof(labels[0])))
        )->setFontAngle(45);

    // Add a title to the y axis
    c->yAxis()->setTitle("Universal Stock Index");

    // Draw the y axis on the right hand side of the plot area
    c->setYAxisOnRight(true);

    // Add a CandleStick layer to the chart using green (00ff00) for up candles and red (ff0000) for
    // down candles
    CandleStickLayer *layer = c->addCandleStickLayer(DoubleArray(highData, (int)(sizeof(highData) /
        sizeof(highData[0]))), DoubleArray(lowData, (int)(sizeof(lowData) / sizeof(lowData[0]))),
        DoubleArray(openData, (int)(sizeof(openData) / sizeof(openData[0]))), DoubleArray(closeData,
        (int)(sizeof(closeData) / sizeof(closeData[0]))), 0x00ff00, 0xff0000);

    // Set the line width to 2 pixels
    layer->setLineWidth(2);

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

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