This example demonstrates using symbols to represent data points and using gradient color for plot area background.
[File: phpdemo/symbolline2.php]
<?php
require_once("../lib/phpchartdir.php");
# The data for the line chart
$data0 = array(42, 49, 33, 38, 64, 56, 29, 41, 44, 57, 59, 42);
$data1 = array(65, 75, 47, 34, 42, 49, 73, 62, 90, 69, 66, 78);
$data2 = array(36, 28, 25, 28, 38, 20, 22, 30, 25, 33, 30, 24);
$labels = array("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
# Create a XYChart object of size 600 x 375 pixels
$c = new XYChart(600, 375);
# Add a title to the chart using 18pt Times Bold Italic font
$c->addTitle("Product Line Global Revenue", "Times New Roman Bold Italic", 18);
# Set the plotarea at (50, 55) and of 500 x 280 pixels in size. Use a vertical gradient color from
# light blue (f9f9ff) to sky blue (aaccff) as background. Set border to transparent and grid lines
# to white (ffffff).
$c->setPlotArea(50, 55, 500, 280, $c->linearGradientColor(0, 55, 0, 335, 0xf9fcff, 0xaaccff), -1,
Transparent, 0xffffff);
# Add a legend box at (50, 28) using horizontal layout. Use 10pt Arial Bold as font, with
# transparent background.
$c->addLegend(50, 28, false, "Arial Bold", 10)->setBackground(Transparent);
# Set the x axis labels
$c->xAxis->setLabels($labels);
# Set y-axis tick density to 30 pixels. ChartDirector auto-scaling will use this as the guideline
# when putting ticks on the y-axis.
$c->yAxis->setTickDensity(30);
# Set axis label style to 8pt Arial Bold
$c->xAxis->setLabelStyle("Arial Bold", 8);
$c->yAxis->setLabelStyle("Arial Bold", 8);
# Set axis line width to 2 pixels
$c->xAxis->setWidth(2);
$c->yAxis->setWidth(2);
# Add axis title using 10pt Arial Bold Italic font
$c->yAxis->setTitle("Revenue in USD millions", "Arial Bold Italic", 10);
# Add a line layer to the chart
$layer = $c->addLineLayer2();
# Set the line width to 3 pixels
$layer->setLineWidth(3);
# Add the three data sets to the line layer, using circles, diamands and X shapes as symbols
$layer->addDataSet($data0, 0xff0000, "Quantum Computer")->setDataSymbol(CircleSymbol, 9);
$layer->addDataSet($data1, 0x00ff00, "Atom Synthesizer")->setDataSymbol(DiamondSymbol, 11);
$layer->addDataSet($data2, 0xff6600, "Proton Cannon")->setDataSymbol(Cross2Shape(), 11);
# Output the chart
$viewer = new WebChartViewer("chart1");
$viewer->setChart($c, SVG);
# Include tool tip for the chart
$viewer->setImageMap($c->getHTMLImageMap("", "",
"title='Revenue of {dataSetName} in {xLabel}: US\$ {value}M'"));
?>
<!DOCTYPE html>
<html>
<head>
<title>Symbol Line 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;">
Symbol Line 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>
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