filledlineex03.php
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<?php // content="text/plain; charset=utf-8"
require_once ('jpgraph/jpgraph.php');
require_once ('jpgraph/jpgraph_line.php');
 
$datay = array(11,30,20,13,10,'x',16,12,'x',15,4,9);
 
// Setup the graph
$graph = new Graph(400,250);
$graph->SetScale('intlin');
$graph->title->Set('Filled line with NULL values');
//Make sure data starts from Zero whatever data we have
$graph->yscale->SetAutoMin(0);
 
$p1 = new LinePlot($datay);
$p1->SetFillColor('lightblue');
$graph->Add($p1);
 
// Output line
$graph->Stroke();
 
?>