Polar Spline Chart

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

# The data for the chart
$data0 = array(5.1, 2.6, 1.5, 2.2, 5.1, 4.3, 4.0, 9.0, 1.7, 8.8, 9.9, 9.5, 9.4, 1.8, 2.1, 2.3, 3.5,
    7.7, 8.8, 6.1, 5.0, 3.1, 6.0, 4.3);
$angles0 = array(0, 15, 30, 45, 60, 75, 90, 105, 120, 135, 150, 165, 180, 195, 210, 225, 240, 255,
    270, 285, 300, 315, 330, 345);

$data1 = array(8.1, 2.5, 5, 5.2, 6.5, 8.5, 9, 7.6, 8.7, 6.4, 5.5, 5.4, 3.0, 8.7, 7.1, 8.8, 7.9, 2.2,
    5.0, 4.0, 1.5, 7.5, 8.3, 9.0);
$angles1 = array(0, 15, 30, 45, 60, 75, 90, 105, 120, 135, 150, 165, 180, 195, 210, 225, 240, 255,
    270, 285, 300, 315, 330, 345);

# Create a PolarChart object of size 460 x 460 pixels
$c = new PolarChart(460, 460);

# Add a title to the chart at the top left corner using 15pt Arial Bold Italic font
$c->addTitle2(TopLeft, "<*underline=2*>EM Field Strength", "Arial Bold Italic", 15);

# Set center of plot area at (230, 240) with radius 180 pixels
$c->setPlotArea(230, 240, 180);

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

# Add a legend box at the top right corner of the chart using 9pt Arial Bold font
$c->addLegend(459, 0, true, "Arial Bold", 9)->setAlignment(TopRight);

# Set angular axis as 0 - 360, with a spoke every 30 units
$c->angularAxis->setLinearScale(0, 360, 30);

# Add a red (0xff9999) spline area layer to the chart using (data0, angles0)
$c->addSplineAreaLayer($data0, 0xff9999, "Above 100MHz")->setAngles($angles0);

# Add a blue (0xff) spline line layer to the chart using (data1, angle1)
$layer1 = $c->addSplineLineLayer($data1, 0x0000ff, "Below 100MHz");
$layer1->setAngles($angles1);

# Set the line width to 3 pixels
$layer1->setLineWidth(3);

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

# Include tool tip for the chart
$viewer->setImageMap($c->getHTMLImageMap("", "",
    "title='{dataSetName} EM field at {angle} deg: {value} Watt'"));
?>

<!DOCTYPE html>
<html>
<head>
    <title>Polar Spline 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 Spline 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>