ChartDirector 7.0 (PHP Edition)

Simple Line Chart




This example demonstrates the basic steps in creating line charts.

Source Code Listing

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

# The data for the line chart
$data = array(30, 28, 40, 55, 75, 68, 54, 60, 50, 62, 75, 65, 75, 91, 60, 55, 53, 35, 50, 66, 56,
    48, 52, 65, 62);

# The labels for the line chart
$labels = array("0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14",
    "15", "16", "17", "18", "19", "20", "21", "22", "23", "24");

# Create a XYChart object of size 250 x 250 pixels
$c = new XYChart(250, 250);

# Set the plotarea at (30, 20) and of size 200 x 200 pixels
$c->setPlotArea(30, 20, 200, 200);

# Add a line chart layer using the given data
$c->addLineLayer($data);

# Set the labels on the x axis.
$c->xAxis->setLabels($labels);

# Display 1 out of 3 labels on the x-axis.
$c->xAxis->setLabelStep(3);

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

# Include tool tip for the chart
$viewer->setImageMap($c->getHTMLImageMap("", "", "title='Hour {xLabel}: Traffic {value} GBytes'"));
?>

<!DOCTYPE html>
<html>
<head>
    <title>Simple Line Chart</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;">
        Simple Line Chart
    </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>