ChartDirector 7.0 (PHP Edition)

Rotated Area Chart




This example demonstrates swapping the x and y axes to produce an rotated area chart in which the area goes from left to right (instead of bottom to top).

The x and y axes in the example are configured as follows:

The area in this chart is filled using a gradient color created with BaseChart.gradientColor.

Source Code Listing

[File: phpdemo/rotatedarea.php]
<?php require_once("../lib/phpchartdir.php"); # The data for the area chart $data = array(30, 28, 40, 55, 75, 68, 54, 60, 50, 62, 75, 65, 75, 89, 60, 55, 53, 35, 50, 66, 56, 48, 52, 65, 62); # The labels for the area 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 320 x 320 pixels $c = new XYChart(320, 320); # Swap the x and y axis to become a rotated chart $c->swapXY(); # Set the y axis on the top side (right + rotated = top) $c->setYAxisOnRight(); # Reverse the x axis so it is pointing downwards $c->xAxis->setReverse(); # Set the plotarea at (50, 50) and of size 200 x 200 pixels. Enable horizontal and vertical grids by # setting their colors to grey (0xc0c0c0). $c->setPlotArea(50, 50, 250, 250)->setGridColor(0xc0c0c0, 0xc0c0c0); # Add a line chart layer using the given data $c->addAreaLayer($data, $c->gradientColor(50, 0, 300, 0, 0xffffff, 0x0000ff)); # Set the labels on the x axis. Append "m" after the value to show the unit. $c->xAxis->setLabels2($labels, "{value} m"); # Display 1 out of 3 labels. $c->xAxis->setLabelStep(3); # Add a title to the x axis $c->xAxis->setTitle("Depth"); # Add a title to the y axis $c->yAxis->setTitle("Carbon Dioxide Concentration (ppm)"); # Output the chart $viewer = new WebChartViewer("chart1"); $viewer->setChart($c, SVG); # Include tool tip for the chart $viewer->setImageMap($c->getHTMLImageMap("", "", "title='Carbon dioxide concentration at {xLabel}: {value} ppm'")); ?> <!DOCTYPE html> <html> <head> <title>Rotated Area 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;"> Rotated Area 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>