This example demonstrates using symbols to represent data points, and putting data labels on top of the symbols.

Note that this example uses a 1 x 2 pixel pattern as the title background.

• Set background color and 3D border for the chart using XYChart.XYChart.
  
  
• Enable both vertical and horizontal grid lines using XYChart.setPlotArea.
  
  
• Create a pattern color with a 1 x 2 pixel memory pattern using BaseChart.patternColor. Set it as the background color of the title box using Box.setBackground.
  
  
• Enable symbols for the data points using DataSet.setDataSymbol.
  
  
• Add labels on top of the symbols using Layer.setDataLabelFormat.

[File: phpdemo/symbolline.php".]

<?php require_once("../lib/phpchartdir.php"); #The data for the line chart $data0 = array(60.2, 51.7, 81.3, 48.6, 56.2, 68.9, 52.8); $data1 = array(30.0, 32.7, 33.9, 29.5, 32.2, 28.4, 29.8); $labels = array("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"); #Create a XYChart object of size 300 x 180 pixels, with a pale yellow (0xffffc0) #background, a black border, and 1 pixel 3D border effect. $c = new XYChart(300, 180, 0xffffc0, 0x0, 1); #Set the plotarea at (45, 35) and of size 240 x 120 pixels, with white #background. Turn on both horizontal and vertical grid lines with light grey #color (0xc0c0c0) $c->setPlotArea(45, 35, 240, 120, 0xffffff, -1, -1, 0xc0c0c0, -1); #Add a legend box at (45, 12) (top of the chart) using horizontal layout and 8 #pts Arial font Set the background and border color to Transparent. $legendObj = $c->addLegend(45, 12, false, "", 8); $legendObj->setBackground(Transparent); #Add a title to the chart using 9 pts Arial Bold/white font. Use a 1 x 2 bitmap #pattern as the background. $titleObj = $c->addTitle("Server Load (Jun 01 - Jun 07)", "arialbd.ttf", 9, 0xffffff); $titleObj->setBackground($c->patternColor(array(0x4000, 0x8000), 2)); #Set the y axis label format to nn% $c->yAxis->setLabelFormat("{value}%"); #Set the labels on the x axis $c->xAxis->setLabels($labels); #Add a line layer to the chart $layer = $c->addLineLayer(); #Add the first line. Plot the points with a 7 pixel square symbol $dataSetObj = $layer->addDataSet($data0, 0xcf4040, "Peak"); $dataSetObj->setDataSymbol(SquareSymbol, 7); #Add the second line. Plot the points with a 9 pixel dismond symbol $dataSetObj = $layer->addDataSet($data1, 0x40cf40, "Average"); $dataSetObj->setDataSymbol(DiamondSymbol, 9); #Enable data label on the data points. Set the label format to nn%. $layer->setDataLabelFormat("{value|0}%"); #output the chart header("Content-type: image/png"); print($c->makeChart2(PNG)); ?>