basic_contourex03-1.php
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<?php // content="text/plain; charset=utf-8"
// Basic contour plot example
 
require_once ("jpgraph/jpgraph.php");
require_once ("jpgraph/jpgraph_contour.php");
 
$data = array(
            array ( 12,7,3,15 ),
            array ( 18,5,1, 9 ),
            array ( 13,9,5,12),
            array (  5,3,8, 9 ),
            array (  1,8,5, 7 ));
 
 
// Basic contour graph
$graph = new Graph(350,250);
$graph->SetScale('intint');
 
// Show axis on all sides
$graph->SetAxisStyle(AXSTYLE_BOXOUT);
 
// Adjust the margins to fit the margin
$graph->SetMargin(30,100,40,30);
 
// Setup
$graph->title->Set('Basic contour plot with multiple axis');
$graph->title->SetFont(FF_ARIAL,FS_BOLD,12);
 
// A simple contour plot with default arguments (e.g. 10 isobar lines)
$cp = new ContourPlot($data,10,1);
 
// Display the legend
$cp->ShowLegend();
 
$graph->Add($cp);
 
// ... and send the graph back to the browser
$graph->Stroke();
 
?>