posnegbar.php
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<![CDATA[
<?php
require_once("../lib/phpchartdir.php");
# The data for the bar chart
$data = array(-6.3, 2.3, 0.7, -3.4, 2.2, -2.9, -0.1, -0.1, 3.3, 6.2, 4.3, 1.6);
# The labels for the bar chart
$labels = array("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
# Create a XYChart object of size 500 x 320 pixels
$c = new XYChart(500, 320);
# Add a title to the chart using Arial Bold Italic font
$c->addTitle("Productivity Change - Year 2005", "Arial Bold Italic");
# Set the plotarea at (50, 30) and of size 400 x 250 pixels
$c->setPlotArea(50, 30, 400, 250);
# Add a bar layer to the chart using the Overlay data combine method
$layer = $c->addBarLayer2(Overlay);
# Select positive data and add it as data set with blue (6666ff) color
$layer->addDataSet((new ArrayMath($data))->selectGEZ(null, NoValue)->result(), 0x6666ff);
# Select negative data and add it as data set with orange (ff6600) color
$layer->addDataSet((new ArrayMath($data))->selectLTZ(null, NoValue)->result(), 0xff6600);
# Add labels to the top of the bar using 8 pt Arial Bold font. The font color is configured to be
# red (0xcc3300) below zero, and blue (0x3333ff) above zero.
$layer->setAggregateLabelStyle("Arial Bold", 8, $layer->yZoneColor(0, 0xcc3300, 0x3333ff));
# Set the labels on the x axis and use Arial Bold as the label font
$c->xAxis->setLabels($labels)->setFontStyle("Arial Bold");
# Draw the y axis on the right of the plot area
$c->setYAxisOnRight(true);
# Use Arial Bold as the y axis label font
$c->yAxis->setLabelStyle("Arial Bold");
# Add a title to the y axis
$c->yAxis->setTitle("Percentage");
# Add a light blue (0xccccff) zone for positive part of the plot area
$c->yAxis->addZone(0, 9999, 0xccccff);
# Add a pink (0xffffcc) zone for negative part of the plot area
$c->yAxis->addZone(-9999, 0, 0xffcccc);
# Output the chart
$viewer = new WebChartViewer("chart1");
$viewer->setChart($c, SVG);
# Include tool tip for the chart
$viewer->setImageMap($c->getHTMLImageMap("", "", "title='{xLabel}: {value}%'"));
?>
<!DOCTYPE html>
<html>
<head>
<title>Positive Negative Bars</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;">
Positive Negative Bars
</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>
]]>