Inizializzazione

jpgraph-3.5.0b1/src/Examples/dateaxisex4.php

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