Stacked Area Chart

[File: phpdemo/stackedarea.php]
<?php
require_once("../lib/phpchartdir.php");

# The data for the area chart
$data0 = array(42, 49, 33, 38, 51, 46, 29, 41, 44, 57, 59, 52, 37, 34, 51, 56, 56, 60, 70, 76, 63,
    67, 75, 64, 51);
$data1 = array(50, 45, 47, 34, 42, 49, 63, 62, 73, 59, 56, 50, 64, 60, 67, 67, 58, 59, 73, 77, 84,
    82, 80, 84, 89);
$data2 = array(61, 79, 85, 66, 53, 39, 24, 21, 37, 56, 37, 22, 21, 33, 13, 17, 4, 23, 16, 25, 9, 10,
    5, 7, 16);
$labels = array("0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14",
    "15", "16", "17", "18", "19", "20", "21", "22", "23", "24");

# Create a XYChart object of size 300 x 210 pixels. Set the background to pale yellow (0xffffc0)
# with a black border (0x0)
$c = new XYChart(300, 210, 0xffffc0, 0x000000);

# Set the plotarea at (50, 30) and of size 240 x 140 pixels. Use white (0xffffff) background.
$c->setPlotArea(50, 30, 240, 140)->setBackground(0xffffff);

# Add a legend box at (50, 185) (below of plot area) using horizontal layout. Use 8pt Arial font
# with Transparent background.
$c->addLegend(50, 185, false, "", 8)->setBackground(Transparent);

# Add a title box to the chart using 8pt Arial Bold font, with yellow (0xffff40) background and a
# black border (0x0)
$c->addTitle("Sales Volume", "Arial Bold", 8)->setBackground(0xffff40, 0);

# Set the y axis label format to US$nnnn
$c->yAxis->setLabelFormat("US\${value}");

# Set the labels on the x axis.
$c->xAxis->setLabels($labels);

# Display 1 out of 2 labels on the x-axis. Show minor ticks for remaining labels.
$c->xAxis->setLabelStep(2, 1);

# Add an stack area layer with three data sets
$layer = $c->addAreaLayer2(Stack);
$layer->addDataSet($data0, 0x4040ff, "Store #1");
$layer->addDataSet($data1, 0xff4040, "Store #2");
$layer->addDataSet($data2, 0x40ff40, "Store #3");

# Output the chart
$viewer = new WebChartViewer("chart1");
$viewer->setChart($c, SVG);

# Include tool tip for the chart
$viewer->setImageMap($c->getHTMLImageMap("", "",
    "title='{dataSetName} sales at hour {xLabel}: US\${value}K'"));
?>

<!DOCTYPE html>
<html>
<head>
    <title>Stacked Area Chart</title>
    <!-- Include ChartDirector Javascript Library to support chart interactions -->
    <script type="text/javascript" src="cdjcv.js"></script>
</head>
<body style="margin:5px 0px 0px 5px">
    <div style="font:bold 18pt verdana;">
        Stacked Area Chart
    </div>
    <hr style="border:solid 1px #000080; background:#000080" />
    <div style="font:10pt verdana; margin-bottom:1.5em">
        <a href="viewsource.php?file=<?=basename(__FILE__)?>">View Chart Source Code</a>
    </div>
    <!-- ****** Here is the chart image ****** -->
    <?php echo $viewer->renderHTML(); ?>
</body>
</html>