3D Stacked Area Chart

This example demonstrates creating a stacked area chart with 3D effects.

The key features demonstrated in this example are:

Add a stacked area layer using XYChart.addAreaLayer2 with the Stack predefined constant.
Add multiple data sets to the area layer using Layer.addDataSet.
Add a legend to the chart using BaseChart.addLegend
Add a title to the y-axis using Axis.setTitle, and draw the title upright (instead of rotated 90 degrees) using TextBox.setFontAngle. Note that the title can contain multiple lines using line break characters.

[File: phpdemo/threedstackarea.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 500 x 300 pixels
$c = new XYChart(500, 300);

# Set the plotarea at (90, 30) and of size 300 x 240 pixels.
$c->setPlotArea(90, 30, 300, 240);

# Add a legend box at (405, 100)
$c->addLegend(405, 100);

# Add a title to the chart
$c->addTitle("Daily System Load");

# Add a title to the y axis. Draw the title upright (font angle = 0)
$c->yAxis->setTitle("Database\nQueries\n(per sec)")->setFontAngle(0);

# 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 area layer
$layer = $c->addAreaLayer();

# Draw the area layer in 3D
$layer->set3D();

# Add the three data sets to the area layer
$layer->addDataSet($data0, -1, "Server # 1");
$layer->addDataSet($data1, -1, "Server # 2");
$layer->addDataSet($data2, -1, "Server # 3");

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

# Include tool tip for the chart
$viewer->setImageMap($c->getHTMLImageMap("", "",
    "title='{dataSetName} load at hour {xLabel}: {value} queries/sec'"));
?>

<!DOCTYPE html>
<html>
<head>
    <title>3D 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;">
        3D 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>