ChartDirector 7.0 (PHP Edition)

Polar Line Chart




This example demonstrates a polar line chart, completed with data symbols and data labels.

Source Code Listing

[File: phpdemo/polarline.php]
<?php require_once("../lib/phpchartdir.php"); # The data for the chart $data0 = array(90, 25, 40, 55, 68, 44, 79, 85, 50); $angles0 = array(15, 60, 110, 180, 230, 260, 260, 310, 340); $data1 = array(80, 91, 66, 80, 92, 87); $angles1 = array(40, 65, 88, 110, 150, 200); # Create a PolarChart object of size 460 x 500 pixels, with a grey (e0e0e0) background and 1 pixel # 3D border $c = new PolarChart(460, 500, 0xe0e0e0, 0x000000, 1); # Add a title to the chart at the top left corner using 15pt Arial Bold Italic font. Use a wood # pattern as the title background. $c->addTitle("Polar Line Chart Demo", "Arial Bold Italic", 15)->setBackground($c->patternColor( dirname(__FILE__)."/wood.png")); # Set center of plot area at (230, 280) with radius 180 pixels, and white (ffffff) background. $c->setPlotArea(230, 280, 180, 0xffffff); # Set the grid style to circular grid, with grids below the chart layers $c->setGridStyle(false, false); # Add a legend box at top-center of plot area (230, 35) using horizontal layout. Use 10pt Arial Bold # font, with 1 pixel 3D border effect. $b = $c->addLegend(230, 35, false, "Arial Bold", 9); $b->setAlignment(TopCenter); $b->setBackground(Transparent, Transparent, 1); # Set angular axis as 0 - 360, with a spoke every 30 units $c->angularAxis->setLinearScale(0, 360, 30); # Add a blue (0xff) line layer to the chart using (data0, angle0) $layer0 = $c->addLineLayer($data0, 0x0000ff, "Close Loop Line"); $layer0->setAngles($angles0); # Set the line width to 2 pixels $layer0->setLineWidth(2); # Use 11 pixel triangle symbols for the data points $layer0->setDataSymbol(TriangleSymbol, 11); # Enable data label and set its format $layer0->setDataLabelFormat("({value},{angle})"); # Set the data label text box with light blue (0x9999ff) backgruond color and 1 pixel 3D border # effect $layer0->setDataLabelStyle()->setBackground(0x9999ff, Transparent, 1); # Add a red (0xff0000) line layer to the chart using (data1, angle1) $layer1 = $c->addLineLayer($data1, 0xff0000, "Open Loop Line"); $layer1->setAngles($angles1); # Set the line width to 2 pixels $layer1->setLineWidth(2); # Use 11 pixel diamond symbols for the data points $layer1->setDataSymbol(DiamondSymbol, 11); # Set the line to open loop $layer1->setCloseLoop(false); # Enable data label and set its format $layer1->setDataLabelFormat("({value},{angle})"); # Set the data label text box with light red (0xff9999) backgruond color and 1 pixel 3D border # effect $layer1->setDataLabelStyle()->setBackground(0xff9999, Transparent, 1); # Output the chart $viewer = new WebChartViewer("chart1"); $viewer->setChart($c, SVG); # Include tool tip for the chart $viewer->setImageMap($c->getHTMLImageMap("", "", "title='[{dataSetName}] ({radius}, {angle})'")); ?> <!DOCTYPE html> <html> <head> <title>Polar 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;"> Polar 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>