source: trunk/xgraph/jpgraph/Examples/scatterlinkex2.php

<?php // content="text/plain; charset=utf-8"
require_once ('jpgraph/jpgraph.php');
require_once ('jpgraph/jpgraph_scatter.php');


// Make a circle with a scatterplot
$steps=16;
for($i=0; $i<$steps; ++$i) {
        $a=2*M_PI/$steps*$i;
        $datax[$i]=cos($a);
        $datay[$i]=sin($a);
}


$graph = new Graph(300,200);
$graph->SetScale("linlin");

$graph->img->SetMargin(40,40,40,40);            

$graph->SetShadow();
$graph->title->Set("Linked scatter plot");
$graph->title->SetFont(FF_FONT1,FS_BOLD);

// 10% top and bottom grace
$graph->yscale->SetGrace(5,5);
$graph->xscale->SetGrace(1,1);

$sp1 = new ScatterPlot($datay,$datax);
$sp1->mark->SetType(MARK_FILLEDCIRCLE);
$sp1->mark->SetFillColor("red");
$sp1->SetColor("blue");

//$sp1->SetWeight(3);
$sp1->mark->SetWidth(4);
$sp1->SetLinkPoints();

$graph->Add($sp1);

$graph->Stroke();

?>