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Version 1.12

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nemunaire 2009-11-01 12:00:00 +01:00
commit de31cd3e9a
1373 changed files with 156282 additions and 45238 deletions
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55
jpgraph/Examples/dateaxisex1.php
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<?php
include ("../jpgraph.php");
include ("../jpgraph_line.php");
// The callback that converts timestamp to minutes and seconds
function TimeCallback($aVal) {
return Date('H:i:s',$aVal);
}
// Fake some suitable random data
$now = time();
$datax = array($now);
for( $i=0; $i < 360; $i += 10 ) {
$datax[] = $now + $i;
}
$n = count($datax);
$datay=array();
for( $i=0; $i < $n; ++$i ) {
$datay[] = rand(30,150);
}
// Setup the basic graph
$graph = new Graph(324,250);
$graph->SetMargin(40,40,30,70);
$graph->title->Set('Date: '.date('Y-m-d',$now));
$graph->SetAlphaBlending();
// Setup a manual x-scale (We leave the sentinels for the
// Y-axis at 0 which will then autoscale the Y-axis.)
// We could also use autoscaling for the x-axis but then it
// probably will start a little bit earlier than the first value
// to make the first value an even number as it sees the timestamp
// as an normal integer value.
$graph->SetScale("intlin",0,200,$now,$datax[$n-1]);
// Setup the x-axis with a format callback to convert the timestamp
// to a user readable time
$graph->xaxis->SetLabelFormatCallback('TimeCallback');
$graph->xaxis->SetLabelAngle(90);
// Create the line
$p1 = new LinePlot($datay,$datax);
$p1->SetColor("blue");
// Set the fill color partly transparent
$p1->SetFillColor("blue@0.4");
// Add lineplot to the graph
$graph->Add($p1);
// Output line
$graph->Stroke();
?>