/usr/share/doc/libphp-jpgraph-examples/examples/nullvalueex01.php is in libphp-jpgraph-examples 1.5.2-12.1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 | <?php
include ("/usr/share/jpgraph/jpgraph.php");
include ("/usr/share/jpgraph/jpgraph_line.php");
// Some data
$datax = array("2001-04-01","2001-04-02","2001-04-03",
"2001-04-04","2001-04-05","2001-04-06");
$datay = array(28,13,24,"",90,11);
$data2y = array(11,41,"-",33,"-",63);
// A nice graph with anti-aliasing
$graph = new Graph(450,250,"auto");
$graph->img->SetMargin(40,170,40,80);
//$graph->img->SetAntiAliasing();
$graph->SetScale("textlin");
$graph->SetShadow();
$graph->title->Set("Line plot with null values");
// Use built in font
$graph->title->SetFont(FF_FONT1,FS_BOLD);
// Slightly adjust the legend from it's default position in the
// top right corner.
$graph->legend->Pos(0.03,0.5,"right","center");
// Setup X-scale
$graph->xaxis->SetTickLabels($datax);
$graph->xaxis->SetFont(FF_FONT1);
$graph->xaxis->SetLabelAngle(90);
// Create the first line
$p1 = new LinePlot($datay);
$p1->mark->SetType(MARK_FILLEDCIRCLE);
$p1->mark->SetFillColor("red");
$p1->mark->SetWidth(4);
$p1->SetColor("blue");
$p1->SetCenter();
$p1->SetLegend("Undefined variant 1");
$graph->Add($p1);
// ... and the second
$p2 = new LinePlot($data2y);
$p2->mark->SetType(MARK_STAR);
$p2->mark->SetFillColor("red");
$p2->mark->SetWidth(4);
$p2->SetColor("red");
$p2->SetCenter();
$p2->SetLegend("Undefined variant 2");
$graph->Add($p2);
// Output line
$graph->Stroke();
?>
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