Inizializzazione

jpgraph-3.5.0b1/src/Examples/inyaxisex3.php

@@ -0,0 +1,69 @@
+<?php // content="text/plain; charset=utf-8"
+require_once ('jpgraph/jpgraph.php');
+require_once ('jpgraph/jpgraph_line.php');
+
+// Callback to negate the argument
+function _cb_negate($aVal) {
+    return round(-$aVal);
+}
+
+// A fake depth curve
+$ydata = array(0,1,4,5,8,9,10,14,16,16,16,18,20,20,20,22,22.5,22,19,19,15,15,15,15,10,10,10,6,5,5,5,4,4,2,1,0);
+
+$n = count($ydata);
+$y2data = array();
+for( $i=0; $i< $n; ++$i ) {
+    $y2data[] = $ydata[$i]+10;
+}
+
+// Negate all data
+$n = count($ydata);
+for($i=0; $i<$n; ++$i) {
+    $ydata[$i] = round(-$ydata[$i]);
+    $y2data[$i] = round(-$y2data[$i]);
+}
+
+// Basic graph setup
+$graph = new Graph(400,300);
+$graph->SetScale("linlin");
+$graph->SetY2Scale("lin");
+$graph->SetMargin(50,50,60,40);	
+$graph->SetMarginColor('darkblue');
+$graph->SetColor('darkblue');
+
+// Setup titles
+$graph->title->Set("Inverting both Y-axis");
+$graph->title->SetFont(FF_FONT1,FS_BOLD);
+$graph->title->SetColor("white");
+
+$graph->subtitle->Set("(Negated Y & Y2 axis)");
+$graph->subtitle->SetFont(FF_FONT1,FS_NORMAL);
+$graph->subtitle->SetColor("white");
+
+// Setup axis
+$graph->yaxis->SetLabelFormatCallback("_cb_negate");
+$graph->xaxis->SetColor("lightblue","white");
+$graph->yaxis->SetColor("lightblue","white");
+$graph->ygrid->SetColor("blue");
+
+// Setup Y2 axis
+$graph->y2axis->SetLabelFormatCallback("_cb_negate");
+$graph->y2axis->SetColor("darkred","white");
+$graph->y2scale->SetAutoMax(0); // To make sure it starts with 0
+
+// Setup plot 1
+$lp1 = new LinePlot($ydata);
+$lp1->SetColor("yellow");
+$lp1->SetWeight(2);
+$graph->Add($lp1);
+
+// Setup plot 2
+$lp2 = new LinePlot($y2data);
+$lp2->SetColor("darkred");
+$lp2->SetWeight(2);
+$graph->AddY2($lp2);
+
+$graph->Stroke();
+?>
+
+