semicirclemeter.php
Back to Chart Graphics
<![CDATA[
<?php
require_once("../lib/phpchartdir.php");
# The value to display on the meter
$value = 72.55;
# Create an AngularMeter object of size 300 x 180 pixels with transparent background
$m = new AngularMeter(300, 180, Transparent);
# Center at (150, 150), scale radius = 128 pixels, scale angle -90 to +90 degrees
$m->setMeter(150, 150, 128, -90, 90);
# Add a pale grey (0xeeeeee) scale background of 148 pixels radius, with a 10 pixel thick light grey
# (0xcccccc) border
$m->addScaleBackground(148, 0xeeeeee, 10, 0xcccccc);
# Meter scale is 0 - 100, with major tick every 20 units, minor tick every 10 units, and micro tick
# every 5 units
$m->setScale(0, 100, 20, 10, 5);
# Set the scale label style to 15pt Arial Italic. Set the major/minor/micro tick lengths to 16/16/10
# pixels pointing inwards, and their widths to 2/1/1 pixels.
$m->setLabelStyle("Arial Italic", 16);
$m->setTickLength(-16, -16, -10);
$m->setLineWidth(0, 2, 1, 1);
# Add a smooth color scale to the meter
$smoothColorScale = array(0, 0x3333ff, 25, 0x0088ff, 50, 0x00ff00, 75, 0xdddd00, 100, 0xff0000);
$m->addColorScale($smoothColorScale);
# Add a text label centered at (150, 125) with 15pt Arial Italic font
$m->addText(150, 125, "CPU", "Arial Italic", 15, TextColor, BottomCenter);
# Add a red (0xff0000) pointer at the specified value
$m->addPointer2($value, 0xff0000);
# Output the chart
$viewer = new WebChartViewer("chart1");
$viewer->setChart($m, SVG);
?>
<!DOCTYPE html>
<html>
<head>
<title>Semicircle Meter</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;">
Semicircle Meter
</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>
]]>