Inizializzazione

jpgraph-3.5.0b1/src/Examples/contourex03.php

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+<?php // content="text/plain; charset=utf-8"
+// Contour plot example 
+
+require_once ('jpgraph/jpgraph.php');
+require_once ('jpgraph/jpgraph_contour.php');
+
+$data = array( 
+            array (0.5,1.1,1.5,1,2.0,3,3,2,1,0.1),
+            array (1.0,1.5,3.0,5,6.0,2,1,1.2,1,4),
+            array (0.9,2.0,2.1,3,6.0,7,3,2,1,1.4),
+            array (1.0,1.5,3.0,4,6.0,5,2,1.5,1,2),
+            array (0.8,2.0,3.0,3,4.0,4,3,2.4,2,3),
+            array (0.6,1.1,1.5,1,4.0,3.5,3,2,3,4),
+            array (1.0,1.5,3.0,5,6.0,2,1,1.2,2.7,4),
+            array (0.8,2.0,3.0,3,5.5,6,3,2,1,1.4),
+            array (1.0,1.5,3.0,4,6.0,5,2,1,0.5,0.2));
+
+
+// Setup a basic graph context with some generous margins to be able
+// to fit the legend            
+$graph = new Graph(500,380);
+$graph->SetMargin(40,140,60,40);	
+
+// Enable antialias. Note with antiaaliasing only line weight=1 is supported.
+$graph->img->SetAntiAliasing();
+
+$graph->title->Set("Example of contour plot");
+$graph->title->SetFont(FF_ARIAL,FS_BOLD,14);
+
+// For contour plots it is custom to use a box style ofr the axis
+$graph->legend->SetPos(0.05,0.5,'right','center');
+$graph->SetScale('intint');
+$graph->SetAxisStyle(AXSTYLE_BOXOUT);
+$graph->xgrid->Show();
+$graph->ygrid->Show();
+
+
+// A simple contour plot with 19 isobars and flipped vertical range
+$cp = new ContourPlot($data,10,true);
+
+// Display the legend
+$cp->ShowLegend();
+
+// Invert the legend to th lowest isobar is on top
+$cp->Invertlegend();
+$graph->Add($cp);
+
+// ... and send the graph back to the browser
+$graph->Stroke();
+
+?>