51 lines
1.4 KiB
PHP
51 lines
1.4 KiB
PHP
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<?php // content="text/plain; charset=utf-8"
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// Contour plot example 04
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require_once ('jpgraph/jpgraph.php');
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require_once ('jpgraph/jpgraph_contour.php');
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$data = array(
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array (12,12,10,10,8,4),
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array (10,10,8,14,10,3),
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array (7,7,13,17,12,8),
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array (4,5,8,12,7,6),
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array (10,8,7,8,10,4));
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// Setup a basic graph context with some generous margins to be able
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// to fit the legend
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$graph = new Graph(500,380);
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$graph->SetMargin(40,140,60,40);
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$graph->title->Set("Example of interpolated contour plot");
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$graph->title->SetFont(FF_ARIAL,FS_BOLD,14);
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$graph->title->SetMargin(10);
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// For contour plots it is custom to use a box style ofr the axis
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$graph->legend->SetPos(0.05,0.5,'right','center');
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$graph->SetScale('intint');
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// Setup axis and grids
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$graph->SetAxisStyle(AXSTYLE_BOXOUT);
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$graph->xgrid->SetLineStyle('dashed');
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$graph->xgrid->Show(true);
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$graph->ygrid->SetLineStyle('dashed');
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$graph->ygrid->Show(true);
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// A simple contour plot with 10 isobar lines and flipped Y-coordinates
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// Make the data smoother by interpolate the original matrice by a factor of two
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// which will make each grid cell half the original size
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$cp = new ContourPlot($data,10, 2);
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$cp->UseHighContrastColor(true);
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// Display the legend
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$cp->ShowLegend();
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// Make the isobar lines slightly thicker
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$graph->Add($cp);
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// ... and send the graph back to the browser
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$graph->Stroke();
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?>
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