surfacecolor.php
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<?php
require_once("../lib/phpchartdir.php");
function createChart($viewer, $chartIndex)
{
# The x and y coordinates of the grid
$dataX = array(-4, -3, -2, -1, 0, 1, 2, 3, 4);
$dataY = array(-4, -3, -2, -1, 0, 1, 2, 3, 4);
# Use random numbers for the z values on the XY grid
$r = new RanSeries(99);
$dataZ = $r->get2DSeries(count($dataX), count($dataY), -0.9, 0.9);
# Create a SurfaceChart object of size 460 x 460 pixels with white (0xffffff) background and
# grey (0x888888) border
$c = new SurfaceChart(460, 460, 0xffffff, 0x888888);
# Set the surface data
$c->setData($dataX, $dataY, $dataZ);
# Add a color axis (the legend) in at the top center of the chart, with labels at the bottom.
# Set the axis to flat style.
$cAxis = $c->setColorAxis((int)($c->getWidth() / 2), 15, Top, 250, Bottom);
$cAxis->setTitle("Color Axis");
$cAxis->setAxisBorder(Transparent, 0);
# By default, the color axis is synchronized with the z-axis. The following code remove the
# synchronization so that the color axis will auto-scale independently. Set the auto-scale
# minimum tick spacing to 20 pixels.
$cAxis->syncAxis(null);
$cAxis->setTickDensity(20);
if ($chartIndex == 1) {
# Speicify a color gradient as a list of colors, and use it in the color axis.
$colorGradient = array(0x0044cc, 0xffffff, 0x00aa00);
$cAxis->setColorGradient(false, $colorGradient);
} else if ($chartIndex == 2) {
# Specify the color scale to use in the color axis
$colorScale = array(-1.0, 0x1a9850, -0.75, 0x66bd63, -0.5, 0xa6d96a, -0.25, 0xd9ef8b, 0,
0xfee08b, 0.25, 0xfdae61, 0.5, 0xf46d43, 0.75, 0xd73027, 1);
$cAxis->setColorScale($colorScale);
} else if ($chartIndex == 3) {
# Specify the color scale to use in the color axis. Also specify an underflow color 0x66ccff
# (blue) for regions that fall below the lower axis limit.
$colorScale = array(0, 0xffff99, 0.2, 0x80cdc1, 0.4, 0x35978f, 0.6, 0x01665e, 0.8, 0x003c30,
1);
$cAxis->setColorScale($colorScale, 0x66ccff);
}
# Set the center of the plot region at (230, 250), and set width x depth x height to 240 x 240 x
# 170 pixels
$c->setPlotRegion(230, 250, 240, 240, 170);
# Set the plot region wall thichness to 3 pixels
$c->setWallThickness(3);
# Set the elevation and rotation angles to 45 degrees
$c->setViewAngle(45, 45);
# Set the perspective level to 20
$c->setPerspective(20);
# Spline interpolate data to a 50 x 50 grid for a smooth surface
$c->setInterpolation(50, 50);
# Set the axis title
$c->xAxis->setTitle("X-Axis", "Arial Bold", 10);
$c->yAxis->setTitle("Y-Axis", "Arial Bold", 10);
$c->zAxis->setTitle("Z Axis", "Arial Bold", 10);
# Output the chart
$viewer->setChart($c, SVG);
}
# This example includes 4 charts
$viewers = array();
for ($i = 0; $i < 4; ++$i) {
$viewers[$i] = new WebChartViewer("chart$i");
createChart($viewers[$i], $i);
}
?>
<!DOCTYPE html>
<html>
<head>
<title>Surface Color Scale</title>
<!-- Include ChartDirector Javascript Library to support chart interactions -->
<script type="text/javascript" src="cdjcv.js"></script>
</head>
<body style="margin:5px 0px 0px 5px">
<div style="font:bold 18pt verdana;">
Surface Color Scale
</div>
<hr style="border:solid 1px #000080; background:#000080" />
<div style="font:10pt verdana; margin-bottom:1.5em">
<a href="viewsource.php?file=<?=basename(__FILE__)?>">View Chart Source Code</a>
</div>
<!-- ****** Here are the chart images ****** -->
<?php
for ($i = 0; $i < count($viewers); ++$i) {
echo $viewers[$i]->renderHTML(), " ";
}
?>
</body>
</html>
]]>