Inizializzazione

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

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+<?php // content="text/plain; charset=utf-8"
+require_once ('../jpgraph.php');
+require_once ('../jpgraph_line.php');
+require_once ('../jpgraph_date.php');
+
+//Create some test data
+$xdata = array();
+$ydata = array();
+
+// Timestamps - 2h (=7200s) apart starting 
+$sampling = 7200;
+$n = 50; // data points
+for($i=0; $i < $n; ++$i ) {
+    $xdata[$i] = time() + $i * $sampling;
+    $ydata[0][$i] = rand(12,15);
+    $ydata[1][$i] = rand(100,155);
+    $ydata[2][$i] = rand(20,30);
+}
+
+function formatDate(&$aVal) {
+    $aVal = date('Y-m-d H:i',$aVal);
+}
+
+// Apply this format to all time values in the data to prepare it to be display
+array_walk($xdata,'formatDate');
+
+// Create the graph. 
+$graph  = new Graph(600, 350);
+$graph->title->Set('Accumulated values with specified X-axis scale');
+$graph->SetScale('textlin');
+
+// Setup margin color
+$graph->SetMarginColor('green@0.95');
+
+// Adjust the margin to make room for the X-labels
+$graph->SetMargin(40,30,40,120);
+
+// Turn the tick marks out from the plot area
+$graph->xaxis->SetTickSide(SIDE_BOTTOM);
+$graph->yaxis->SetTickSide(SIDE_LEFT);
+
+$p0 =new LinePlot($ydata[0]);
+$p0->SetFillColor('sandybrown');
+$p1 =new LinePlot($ydata[1]);
+$p1->SetFillColor('lightblue');
+$p2 =new LinePlot($ydata[2]);
+$p2->SetFillColor('red');
+$ap = new AccLinePlot(array($p0,$p1,$p2));
+
+$graph->xaxis->SetTickLabels($xdata);
+$graph->xaxis->SetTextLabelInterval(4);
+
+// Add the plot to the graph
+$graph->Add($ap);
+
+// Set the angle for the labels to 90 degrees
+$graph->xaxis->SetLabelAngle(90);
+
+// Display the graph
+$graph->Stroke();
+?>