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

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

$datay = array(0.2980,0.3039,0.3020,0.3027,0.3015);

$graph = new Graph(300,200);
$graph->img->SetMargin(40,40,40,40);    

$graph->img->SetAntiAliasing();
$graph->SetScale("textlin");
$graph->SetShadow();
$graph->title->Set("Example of 10% top/bottom grace");
$graph->title->SetFont(FF_FONT1,FS_BOLD);

// Add 10% grace to top and bottom of plot
$graph->yscale->SetGrace(10,10);

$p1 = new LinePlot($datay);
$p1->mark->SetType(MARK_FILLEDCIRCLE);
$p1->mark->SetFillColor("red");
$p1->mark->SetWidth(4);
$p1->SetColor("blue");
$p1->SetCenter();
$graph->Add($p1);

$graph->Stroke();

?>