source: trunk/xgraph/jpgraph/Examples/centerlinebarex1.php

<?php // content="text/plain; charset=utf-8"

require_once ('jpgraph/jpgraph.php');
require_once ('jpgraph/jpgraph_bar.php');
require_once ('jpgraph/jpgraph_line.php');


$ydata = array(12,15,22,19,5);

$graph = new Graph(400,200);
$graph->img->SetMargin(40,80,40,40);    
$graph->SetScale("textlin");
$graph->SetShadow();

$graph->title->Set('Center the line points in bars');

$line = new LinePlot($ydata);
$line->SetBarCenter();
$line->SetWeight(2);

$bar = new BarPlot($ydata);
$bar2 = new BarPlot($ydata);
$bar2->SetFillColor("red");

$gbar = new GroupbarPlot(array($bar,$bar2));

$graph->Add($gbar);
$graph->Add($line);

// Output line
$graph->Stroke();

?>