Surface Chart (2)

[File: phpdemo/surface2.php]
<?php
require_once("../lib/phpchartdir.php");

# 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);
    }
}

# Create a SurfaceChart object of size 720 x 540 pixels
$c = new SurfaceChart(720, 540);

# Add a title to the chart using 20 points Times New Roman Italic font
$c->addTitle("Quantum Wave Function", "Times New Roman Italic", 20);

# Set the center of the plot region at (360, 245), and set width x depth x height to 360 x 360 x 270
# pixels
$c->setPlotRegion(360, 245, 360, 360, 270);

# Set the elevation and rotation angles to 20 and 30 degrees
$c->setViewAngle(20, 30);

# Set the data to use to plot the chart
$c->setData($dataX, $dataY, $dataZ);

# Spline interpolate data to a 80 x 80 grid for a smooth surface
$c->setInterpolation(80, 80);

# Set surface grid lines to semi-transparent black (dd000000)
$c->setSurfaceAxisGrid(0xdd000000);

# Set contour lines to semi-transparent white (80ffffff)
$c->setContourColor(0x80ffffff);

# Add a color axis (the legend) in which the left center is anchored at (645, 270). Set the length
# to 200 pixels and the labels on the right side. Use smooth gradient coloring.
$c->setColorAxis(645, 270, Left, 200, Right)->setColorGradient();

# Set the x, y and z axis titles using 10 points Arial Bold font
$c->xAxis->setTitle("x/L(x)", "Arial Bold", 10);
$c->yAxis->setTitle("y/L(y)", "Arial Bold", 10);
$c->zAxis->setTitle("Wave Function Amplitude", "Arial Bold", 10);

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

<!DOCTYPE html>
<html>
<head>
    <title>Surface Chart (2)</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 Chart (2)
    </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>