surfaceperspective.php
Back to Chart Graphics
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<?php
require_once("../lib/phpchartdir.php");
function createChart($viewer, $chartIndex)
{
# The x and y coordinates of the grid
$dataX = array(0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0);
$dataY = array(0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0);
# The values at the grid points. In this example, we will compute the values using the formula z
# = sin((x - 0.5) * 2 * pi) * sin((y - 0.5) * 2 * pi)
$dataZ = array_fill(0, count($dataX) * count($dataY), 0);
for($yIndex = 0; $yIndex < count($dataY); ++$yIndex) {
$y = ($dataY[$yIndex] - 0.5) * 2 * 3.1416;
for($xIndex = 0; $xIndex < count($dataX); ++$xIndex) {
$x = ($dataX[$xIndex] - 0.5) * 2 * 3.1416;
$dataZ[$yIndex * count($dataX) + $xIndex] = sin($x) * sin($y);
}
}
# the perspective level
$perspective = $chartIndex * 12;
# Create a SurfaceChart object of size 360 x 360 pixels, with white (ffffff) background and grey
# (888888) border.
$c = new SurfaceChart(360, 360, 0xffffff, 0x888888);
# Set the perspective level
$c->setPerspective($perspective);
$c->addTitle("Perspective = " . $perspective);
# Set the center of the plot region at (195, 165), and set width x depth x height to 200 x 200 x
# 150 pixels
$c->setPlotRegion(195, 165, 200, 200, 150);
# Set the plot region wall thichness to 5 pixels
$c->setWallThickness(5);
# Set the elevation and rotation angles to 30 and 30 degrees
$c->setViewAngle(30, 30);
# Set the data to use to plot the chart
$c->setData($dataX, $dataY, $dataZ);
# Spline interpolate data to a 40 x 40 grid for a smooth surface
$c->setInterpolation(40, 40);
# Use smooth gradient coloring.
$c->colorAxis->setColorGradient();
# Output the chart
$viewer->setChart($c, SVG);
}
# This example includes 6 charts
$viewers = array();
for ($i = 0; $i < 6; ++$i) {
$viewers[$i] = new WebChartViewer("chart$i");
createChart($viewers[$i], $i);
}
?>
<!DOCTYPE html>
<html>
<head>
<title>Surface Perspective</title>
<!-- Include ChartDirector Javascript Library to support chart interactions -->
<script type="text/javascript" src="cdjcv.js"></script>
</head>
<body style="margin:5px 0px 0px 5px">
<div style="font:bold 18pt verdana;">
Surface Perspective
</div>
<hr style="border:solid 1px #000080; background:#000080" />
<div style="font:10pt verdana; margin-bottom:1.5em">
<a href="viewsource.php?file=<?=basename(__FILE__)?>">View Chart Source Code</a>
</div>
<!-- ****** Here are the chart images ****** -->
<?php
for ($i = 0; $i < count($viewers); ++$i) {
echo $viewers[$i]->renderHTML(), " ";
}
?>
</body>
</html>
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