ChartDirector Ver 5.0 (PHP Edition)

3D Bubble Chart (2)

This examples demonstrates a bubble chart using brighter glass spheres as bubbles.

Source Code Listing

[File: phpdemo/threedbubble2.php]

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

    # The XYZ points for the bubble chart
    $dataX0 = array(170, 300, 1000, 1700);
    $dataY0 = array(16, 69, 16, 75);
    $dataZ0 = array(52, 105, 88, 140);

    $dataX1 = array(500, 1000, 1300);
    $dataY1 = array(40, 58, 85);
    $dataZ1 = array(140, 202, 84);

    # Create a XYChart object of size 540 x 480 pixels
    $c = new XYChart(540, 480);

    # Set the plotarea at (70, 65) and of size 400 x 350 pixels. Turn on both horizontal
    # and vertical grid lines with light grey color (0xc0c0c0)
    $c->setPlotArea(70, 65, 400, 350, -1, -1, Transparent, 0xc0c0c0, -1);

    # Add a legend box at (70, 30) (top of the chart) with horizontal layout. Use 12 pts
    # Times Bold Italic font. Set the background and border color to Transparent.
    $legendObj = $c->addLegend(70, 30, false, "timesbi.ttf", 12);
    $legendObj->setBackground(Transparent);

    # Add a title to the chart using 18 pts Times Bold Itatic font.
    $c->addTitle("Product Comparison Chart", "timesbi.ttf", 18);

    # Add titles to the axes using 12 pts Arial Bold Italic font
    $c->yAxis->setTitle("Capacity (tons)", "arialbi.ttf", 12);
    $c->xAxis->setTitle("Range (miles)", "arialbi.ttf", 12);

    # Set the axes line width to 3 pixels
    $c->xAxis->setWidth(3);
    $c->yAxis->setWidth(3);

    # Add (dataX0, dataY0) as a scatter layer with red (ff3333) glass spheres, where the
    # sphere size is modulated by dataZ0. This creates a bubble effect.
    $scatterLayerObj = $c->addScatterLayer($dataX0, $dataY0, "Technology AAA",
        GlassSphere2Shape, 15, 0xff3333);
    $scatterLayerObj->setSymbolScale($dataZ0);

    # Add (dataX1, dataY1) as a scatter layer with blue (0000ff) glass spheres, where the
    # sphere size is modulated by dataZ1. This creates a bubble effect.
    $scatterLayerObj = $c->addScatterLayer($dataX1, $dataY1, "Technology BBB",
        GlassSphere2Shape, 15, 0x0000ff);
    $scatterLayerObj->setSymbolScale($dataZ1);

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

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