ChartDirector Ver 5.0 (PHP Edition)

High-Low-Open-Close Chart

This example demonstrates a multi-color high-low-open-close chart.

- Create a HLOC layer using XYChart.addHLOCLayer.
- Add custom text to the top left corner of the plot area using BaseChart.addText.
- Draw the y-axis on the right using XYChart.setYAxisOnRight.
- Rotate the x-axis labels by 45 degrees using TextBox.setFontAngle of the TextBox object that represents the axis label prototype (returned from Axis.setLabels).

Source Code Listing

[File: phpdemo/hloc.php]

    <?php
    require_once("../lib/phpchartdir.php");

    #
    # Sample data for the HLOC chart.
    #
    $highData = array(2043, 2039, 2076, 2064, 2048, 2058, 2070, 2033, 2027, 2029, 2071,
        2085, 2034, 2031, 2056, 2128, 2180, 2183, 2192, 2213, 2230, 2281, 2272);

    $lowData = array(1931, 1921, 1985, 2028, 1986, 1994, 1999, 1958, 1943, 1944, 1962,
        2011, 1975, 1962, 1928, 2059, 2112, 2103, 2151, 2127, 2123, 2152, 2212);

    $openData = array(2000, 1957, 1993, 2037, 2018, 2021, 2045, 2009, 1959, 1985, 2008,
        2048, 2006, 2010, 1971, 2080, 2116, 2137, 2170, 2172, 2171, 2191, 2240);

    $closeData = array(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 HLOC chart
    $labels = array("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
    $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)
    $plotAreaObj = $c->setPlotArea(50, 25, 500, 250);
    $plotAreaObj->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 12 pts
    # 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.
    $labelsObj = $c->xAxis->setLabels($labels);
    $labelsObj->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 HLOC layer to the chart using green (008000) for up days and red (ff0000) for
    # down days
    $layer = $c->addHLOCLayer3($highData, $lowData, $openData, $closeData, 0x008000,
        0xff0000);

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

    # Output the chart
    header("Content-type: image/png");
    print($c->makeChart2(PNG));
    ?>

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