ChartDirector 7.0 (PHP Edition)

Surface Chart (3)




This example demonstrates using deep perspective. It also demonstrates surface grid lines of different line styles.

Source Code Listing

[File: phpdemo/surface3.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 = # Sin(x * x / 128 - y * y / 256 + 3) * Cos(x / 4 + 1 - Exp(y / 8)) $dataZ = array_fill(0, count($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) + $xIndex] = sin($x * $x / 128.0 - $y * $y / 256.0 + 3) * cos($x / 4.0 + 1 - exp($y / 8.0)); } } # Create a SurfaceChart object of size 750 x 600 pixels $c = new SurfaceChart(750, 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 (380, 260), and set width x depth x height to 360 x 360 x 270 # pixels $c->setPlotRegion(380, 260, 360, 360, 270); # Set the elevation and rotation angles to 30 and 210 degrees $c->setViewAngle(30, 210); # Set the perspective level to 60 $c->setPerspective(60); # 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); # Use semi-transparent black (c0000000) for x and y major surface grid lines. Use dotted style for x # and y minor surface grid lines. $majorGridColor = 0xc0000000; $minorGridColor = $c->dashLineColor($majorGridColor, DotLine); $c->setSurfaceAxisGrid($majorGridColor, $majorGridColor, $minorGridColor, $minorGridColor); # Set contour lines to semi-transparent white (80ffffff) $c->setContourColor(0x80ffffff); # Add a color axis (the legend) in which the left center is anchored at (665, 280). Set the length # to 200 pixels and the labels on the right side. $c->setColorAxis(665, 280, Left, 200, Right); # Set the x, y and z axis titles using 12 points Arial Bold font $c->xAxis->setTitle("X Title\nPlaceholder", "Arial Bold", 12); $c->yAxis->setTitle("Y Title\nPlaceholder", "Arial Bold", 12); $c->zAxis->setTitle("Z Title Placeholder", "Arial Bold", 12); # Output the chart $viewer = new WebChartViewer("chart1"); $viewer->setChart($c, SVG); ?> <!DOCTYPE html> <html> <head> <title>Surface Chart (3)</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 (3) </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>