Wafer Map

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

# The diameter of the wafer
$diameter = 20;
$radius = $diameter / 2.0;

# The random data array are for a square grid of 20 x 20 cells
$r = new RanSeries(2);
$zData = $r->get2DSeries($diameter, $diameter, 0, 100);

# We remove cells that are outside the wafer circle by setting them to NoValue
for($i = 0; $i < count($zData); ++$i) {
    $x = $i % $diameter + 0.5;
    $y = ($i - $x) / $diameter + 0.5;
    if (($x - $radius) * ($x - $radius) + ($y - $radius) * ($y - $radius) > $radius * $radius) {
        $zData[$i] = NoValue;
    }
}

# Create an XYChart object of size 520 x 480 pixels.
$c = new XYChart(520, 480);

# Add a title the chart with 15pt Arial Bold font
$c->addTitle("Wafer Map Demonstration", "Arial Bold", 15);

# Set the plotarea at (50, 40) and of size 400 x 400 pixels. Set the backgound and border to
# transparent. Set both horizontal and vertical grid lines to light grey. (0xdddddd)
$p = $c->setPlotArea(50, 40, 400, 400, -1, -1, Transparent, 0xdddddd, 0xdddddd);

# Create a discrete heat map with 20 x 20 cells
$layer = $c->addDiscreteHeatMapLayer($zData, $diameter);

# Set the x-axis scale. Use 8pt Arial Bold font. Set axis color to transparent, so only the labels
# visible. Set 0.5 offset to position the labels in between the grid lines.
$c->xAxis->setLinearScale(0, $diameter, 1);
$c->xAxis->setLabelStyle("Arial Bold", 8);
$c->xAxis->setColors(Transparent, TextColor);
$c->xAxis->setLabelOffset(0.5);

# Set the y-axis scale. Use 8pt Arial Bold font. Set axis color to transparent, so only the labels
# visible. Set 0.5 offset to position the labels in between the grid lines.
$c->yAxis->setLinearScale(0, $diameter, 1);
$c->yAxis->setLabelStyle("Arial Bold", 8);
$c->yAxis->setColors(Transparent, TextColor);
$c->yAxis->setLabelOffset(0.5);

# Position the color axis 20 pixels to the right of the plot area and of the same height as the plot
# area. Put the labels on the right side of the color axis. Use 8pt Arial Bold font for the labels.
$cAxis = $layer->setColorAxis($p->getRightX() + 20, $p->getTopY(), TopLeft, $p->getHeight(), Right);
$cAxis->setLabelStyle("Arial Bold", 8);

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

# Include tool tip for the chart
$viewer->setImageMap($c->getHTMLImageMap("", "", "title='<*cdml*>({xLabel}, {yLabel}) = {z|2}'"));
?>

<!DOCTYPE html>
<html>
<head>
    <title>Wafer Map</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;">
        Wafer Map
    </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>