impulsex1.php
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<?php // content="text/plain; charset=utf-8"
require_once ('jpgraph/jpgraph.php');
require_once ('jpgraph/jpgraph_scatter.php');
 
$datay = array(20,22,12,13,17,20,16,19,30,31,40,43);
 
$graph = new Graph(300,200);
$graph->SetScale("textlin");
 
$graph->SetShadow();
$graph->img->SetMargin(40,40,40,40);        
 
$graph->title->Set("Simple mpuls plot");
$graph->title->SetFont(FF_FONT1,FS_BOLD);
 
$sp1 = new ScatterPlot($datay);
$sp1->mark->SetType(MARK_SQUARE);
$sp1->SetImpuls();
 
$graph->Add($sp1);
$graph->Stroke();
 
?>