A multi-color bar chart is a bar chart in which each bar has a different color. This example creates a multi-color bar chart and demonstrates the following ChartDirector features:

• Use BaseChart.gradientColor2 with pre-defined constant goldGradient and blueMetalGradient to create gradient colors with metallic look and feel.
  
  
• Set the background color of the chart with 3D border effect using BaseChart.setBackground.
  
  
• Set the background color of the title box with 3D border effect using Box.setBackground.
  
  
• Create a multi-color bar layer using XYChart.addBarLayer3.
  
  
• Set 3D border effect for the bars using Layer.setBorderColor.

[File: phpdemo/colorbar.php".]

<?php require_once("../lib/phpchartdir.php"); #The data for the bar chart $data = array(85, 156, 179.5, 211, 123); #The labels for the bar chart $labels = array("Mon", "Tue", "Wed", "Thu", "Fri"); #The colors for the bar chart $colors = array(0xb8bc9c, 0xa0bdc4, 0x999966, 0x333366, 0xc3c3e6); #Create a XYChart object of size 260 x 220 pixels $c = new XYChart(260, 220); #Set the background color of the chart to gold (goldGradient). Use a 2 pixel 3D #border. $c->setBackground($c->gradientColor($goldGradient), -1, 2); #Add a title box using 10 point Arial Bold font. Set the background color to #blue metallic (blueMetalGradient). Use a 1 pixel 3D border. $titleObj = $c->addTitle("Daily Network Load", "arialbd.ttf", 10); $titleObj->setBackground($c->gradientColor($blueMetalGradient), -1, 1); #Set the plotarea at (40, 40) and of 200 x 150 pixels in size $c->setPlotArea(40, 40, 200, 150); #Add a multi-color bar chart layer using the given data and colors. Use a 1 #pixel 3D border for the bars. $barLayer3Obj = $c->addBarLayer3($data, $colors); $barLayer3Obj->setBorderColor(-1, 1); #Set the x axis labels using the given labels $c->xAxis->setLabels($labels); #output the chart header("Content-type: image/png"); print($c->makeChart2(PNG)); ?>

Class	Description
PolarChart	The PolarChart class represents polar charts (including radar charts). The PolarChart class is a subclass of BaseChart.
RadialAxis	The RadialAxis class represents radial axes in polar charts. The radial axis is the axis representing the radius component of a polar coordinate.
AngularAxis	The AngularAxis class represents angular axes in polar charts. The angular axis is the axis representing the angular component of a polar coordinate.
PolarLayer	The PolarLayer class is the base class for all PolarChart layer classes.
PolarLineLayer	The PolarLineLayer class represents polar area layers. PolarLineLayer is a subclass of PolarLayer.
PolarAreaLayer	The PolarAreaLayer class represents polar area layers. PolarAreaLayer is a subclass of PolarLayer.
PolarSplineLineLayer	The PolarSplineLineLayer class represents polar spline line layers. PolarSplineLineLayer is a subclass of PolarLineLayer.
PolarSplineAreaLayer	The PolarSplineAreaLayer class represents polar spline area layers. PolarSplineAreaLayer is a subclass of PolarAreaLayer.

Class	Description
DrawArea	The DrawArea class represents drawing surfaces, with methods for performing graphics primitives (such as drawing lines, shapes and texts) and the surfaces.
TTFText	The TTFText class represents text blocks.

Class	Description
ArrayMath	The ArrayMath class is a utility class used to perform array computations.
RanTable	RanTable is a utility class to produce tables with random numbers.