semicirclemeterreadout.php
Back to Chart Graphics
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<?php
require_once("../lib/phpchartdir.php");
function createChart($viewer, $chartIndex)
{
# The value to display on the meter
$value = 66;
# The background and border colors of the meters
$bgColor = array(0x88ccff, 0xffdddd);
$borderColor = array(0x000077, 0x880000);
# Create an AngularMeter object of size 300 x 200 pixels with transparent background
$m = new AngularMeter(300, 200, Transparent);
# Center at (150, 150), scale radius = 124 pixels, scale angle -90 to +90 degrees
$m->setMeter(150, 150, 124, -90, 90);
# Background gradient color with brighter color at the center
$bgGradient = array(0, $m->adjustBrightness($bgColor[$chartIndex], 3), 0.75, $bgColor[
$chartIndex]);
# Add a scale background of 148 pixels radius using the background gradient, with a 13 pixel
# thick border
$m->addScaleBackground(148, $m->relativeRadialGradient($bgGradient), 13, $borderColor[
$chartIndex]);
# 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);
# Demostrate different types of color scales and putting them at different positions
$smoothColorScale = array(0, 0x3333ff, 25, 0x0088ff, 50, 0x00ff00, 75, 0xdddd00, 100, 0xff0000);
if ($chartIndex == 0) {
# Add the smooth color scale at the default position
$m->addColorScale($smoothColorScale);
# Add a red (0xff0000) triangular pointer starting from 38% and ending at 60% of scale
# radius, with a width 6 times the default
$m->addPointer2($value, 0xff0000, -1, TriangularPointer2, 0.38, 0.6, 6);
} else {
# Add the smooth color scale starting at radius 124 with zero width and ending at radius 124
# with 16 pixels inner width
$m->addColorScale($smoothColorScale, 124, 0, 124, -16);
# Add a red (0xff0000) pointer
$m->addPointer2($value, 0xff0000);
}
# Configure a large "pointer cap" to be used as the readout circle at the center. The cap radius
# and border width is set to 33% and 4% of the meter scale radius. The cap color is dark blue
# (0x000044). The border color is light blue (0x66bbff) with a 60% brightness gradient effect.
$m->setCap2(Transparent, 0x000044, 0x66bbff, 0.6, 0, 0.33, 0.04);
# Add value label at the center with light blue (0x66ddff) 28pt Arial Italic font
$m->addText(150, 150, $m->formatValue($value, "{value|0}"), "Arial Italic", 28, 0x66ddff, Center
)->setMargin(0);
# Output the chart
$viewer->setChart($m, SVG);
}
# This example includes 2 charts
$viewers = array();
for ($i = 0; $i < 2; ++$i) {
$viewers[$i] = new WebChartViewer("chart$i");
createChart($viewers[$i], $i);
}
?>
<!DOCTYPE html>
<html>
<head>
<title>Semicircle Meter with Readout</title>
<!-- Include ChartDirector Javascript Library to support chart interactions -->
<script type="text/javascript" src="cdjcv.js"></script>
</head>
<body style="margin:5px 0px 0px 5px">
<div style="font:bold 18pt verdana;">
Semicircle Meter with Readout
</div>
<hr style="border:solid 1px #000080; background:#000080" />
<div style="font:10pt verdana; margin-bottom:1.5em">
<a href="viewsource.php?file=<?=basename(__FILE__)?>">View Chart Source Code</a>
</div>
<!-- ****** Here are the chart images ****** -->
<?php
for ($i = 0; $i < count($viewers); ++$i) {
echo $viewers[$i]->renderHTML(), " ";
}
?>
</body>
</html>
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