Viewing file:  dateaxisex4.php (1.15 KB) -rw-r--r--
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<?php
require_once("../jpgraph.php");
require_once("../jpgraph_line.php");
require_once("../jpgraph_date.php");
// Create a data set in range (50,70) and X-positions
DEFINE('NDATAPOINTS',360);
DEFINE('SAMPLERATE',240);
$start = time();
$end = $start+NDATAPOINTS*SAMPLERATE;
$data = array();
$xdata = array();
for( $i=0; $i < NDATAPOINTS; ++$i ) {
$data[$i] = rand(50,70);
$xdata[$i] = $start + $i * SAMPLERATE;
}
// Create the new graph
$graph = new Graph(540,300);
// Slightly larger than normal margins at the bottom to have room for
// the x-axis labels
$graph->SetMargin(40,40,30,130);
// Fix the Y-scale to go between [0,100] and use date for the x-axis
$graph->SetScale('datlin',0,100);
$graph->title->Set("Example on Date scale");
// Set the angle for the labels to 90 degrees
$graph->xaxis->SetLabelAngle(90);
// The automatic format string for dates can be overridden
$graph->xaxis->scale->SetDateFormat('H:i');
// Adjust the start/end to a specific alignment
$graph->xaxis->scale->SetTimeAlign(MINADJ_10);
$line = new LinePlot($data,$xdata);
$line->SetLegend('Year 2005');
$line->SetFillColor('lightblue@0.5');
$graph->Add($line);
$graph->Stroke();
?>
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