Polar Area Chart

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

# Data for the chart
$data0 = array(5, 3, 10, 4, 3, 5, 2, 5);
$data1 = array(12, 6, 17, 6, 7, 9, 4, 7);
$data2 = array(17, 7, 22, 7, 18, 13, 5, 11);

$labels = array("North", "North<*br*>East", "East", "South<*br*>East", "South", "South<*br*>West",
    "West", "North<*br*>West");

# Create a PolarChart object of size 460 x 500 pixels, with a grey (e0e0e0) background and 1 pixel
# 3D border
$c = new PolarChart(460, 500, 0xe0e0e0, 0x000000, 1);

# Add a title to the chart at the top left corner using 15pt Arial Bold Italic font. Use a wood
# pattern as the title background.
$c->addTitle("Polar Area Chart Demo", "Arial Bold Italic", 15)->setBackground($c->patternColor(
    dirname(__FILE__)."/wood.png"));

# Set center of plot area at (230, 280) with radius 180 pixels, and white (ffffff) background.
$c->setPlotArea(230, 280, 180, 0xffffff);

# Set the grid style to circular grid
$c->setGridStyle(false);

# Add a legend box at top-center of plot area (230, 35) using horizontal layout. Use 10pt Arial Bold
# font, with 1 pixel 3D border effect.
$b = $c->addLegend(230, 35, false, "Arial Bold", 9);
$b->setAlignment(TopCenter);
$b->setBackground(Transparent, Transparent, 1);

# Set angular axis using the given labels
$c->angularAxis->setLabels($labels);

# Specify the label format for the radial axis
$c->radialAxis->setLabelFormat("{value}%");

# Set radial axis label background to semi-transparent grey (40cccccc)
$c->radialAxis->setLabelStyle()->setBackground(0x40cccccc, 0);

# Add the data as area layers
$c->addAreaLayer($data2, -1, "5 m/s or above");
$c->addAreaLayer($data1, -1, "1 - 5 m/s");
$c->addAreaLayer($data0, -1, "less than 1 m/s");

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

# Include tool tip for the chart
$viewer->setImageMap($c->getHTMLImageMap("", "", "title='[{label}] {dataSetName}: {value}%'"));
?>

<!DOCTYPE html>
<html>
<head>
    <title>Polar 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;">
        Polar 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>