ChartDirector 7.0 (PHP Edition)

Surface Chart (1)




This example demonstrates the basic steps in creating surface charts.

Source Code Listing

[File: phpdemo/surface.php]
<?php require_once("../lib/phpchartdir.php"); # The x and y coordinates of the grid $dataX = array(-10, -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10); $dataY = array(-10, -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10); # The values at the grid points. In this example, we will compute the values using the formula z = x # * sin(y) + y * sin(x). $dataZ = array_fill(0, count($dataX) * count($dataY), 0); for($yIndex = 0; $yIndex < count($dataY); ++$yIndex) { $y = $dataY[$yIndex]; for($xIndex = 0; $xIndex < count($dataX); ++$xIndex) { $x = $dataX[$xIndex]; $dataZ[$yIndex * count($dataX) + $xIndex] = $x * sin($y) + $y * sin($x); } } # Create a SurfaceChart object of size 720 x 600 pixels $c = new SurfaceChart(720, 600); # Add a title to the chart using 20 points Times New Roman Italic font $c->addTitle("Surface Energy Density ", "Times New Roman Italic", 20); # Set the center of the plot region at (350, 280), and set width x depth x height to 360 x 360 x 270 # pixels $c->setPlotRegion(350, 280, 360, 360, 270); # Set the data to use to plot the chart $c->setData($dataX, $dataY, $dataZ); # Spline interpolate data to a 80 x 80 grid for a smooth surface $c->setInterpolation(80, 80); # Add a color axis (the legend) in which the left center is anchored at (645, 270). Set the length # to 200 pixels and the labels on the right side. $c->setColorAxis(645, 270, Left, 200, Right); # Set the x, y and z axis titles using 10 points Arial Bold font $c->xAxis->setTitle("X (nm)", "Arial Bold", 10); $c->yAxis->setTitle("Y (nm)", "Arial Bold", 10); $c->zAxis->setTitle("Energy Density (J/m<*font,super*>2<*/font*>)", "Arial Bold", 10); # Output the chart $viewer = new WebChartViewer("chart1"); $viewer->setChart($c, SVG); ?> <!DOCTYPE html> <html> <head> <title>Surface Chart (1)</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;"> Surface Chart (1) </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>