This example demonstrates using external image files as scatter symbols.

The chart in this example is created as 5 scatter layers using XYChart.addScatterLayer, with each layer containing one point.

The symbols for the scatter layers come from external image files. They are loaded using DataSet.setDataSymbol2.

[File: phpdemo/scattersymbols.php".]

<?php require_once("../lib/phpchartdir.php"); #The XY points for the scatter chart $dataX = array(200, 400, 300, 250, 500); $dataY = array(40, 100, 50, 150, 250); #The custom symbols for the points $symbols = array("robot1.png", "robot2.png", "robot3.png", "robot4.png", "robot5.png"); #Create a XYChart object of size 450 x 400 pixels $c = new XYChart(450, 400); #Set the plotarea at (55, 40) and of size 350 x 300 pixels, with a light grey #border (0xc0c0c0). Turn on both horizontal and vertical grid lines with light #grey color (0xc0c0c0) $c->setPlotArea(55, 40, 350, 300, -1, -1, 0xc0c0c0, 0xc0c0c0, -1); #Add a title to the chart using 18 pts Times Bold Itatic font. $c->addTitle("Battle Robots", "timesbi.ttf", 18); #Add a title to the y axis using 12 pts Arial Bold Italic font $c->yAxis->setTitle("Speed (km/s)", "arialbi.ttf", 12); #Add a title to the y axis using 12 pts Arial Bold Italic font $c->xAxis->setTitle("Range (km)", "arialbi.ttf", 12); #Set the axes line width to 3 pixels $c->xAxis->setWidth(3); $c->yAxis->setWidth(3); #Add each point of the data as a separate scatter layer, so that they can have a #different symbol for($i = 0; $i < count($dataX); ++$i) { $scatterLayerObj = $c->addScatterLayer(array($dataX[$i]), array($dataY[$i])) ; $getDataSetObj = $scatterLayerObj->getDataSet(0); $getDataSetObj->setDataSymbol(dirname(__FILE__)."/".$symbols[$i]); } #output the chart header("Content-type: image/png"); print($c->makeChart2(PNG)); ?>