[42] | 1 | <?php // content="text/plain; charset=utf-8" |
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| 2 | // Contour plot example |
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| 3 | |
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| 4 | require_once ('jpgraph/jpgraph.php'); |
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| 5 | require_once ('jpgraph/jpgraph_contour.php'); |
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| 6 | |
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| 7 | $data = array( |
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| 8 | array (0.5,1.1,1.5,1,2.0,3,3,2,1,0.1), |
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| 9 | array (1.0,1.5,3.0,5,6.0,2,1,1.2,1,4), |
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| 10 | array (0.9,2.0,2.1,3,6.0,7,3,2,1,1.4), |
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| 11 | array (1.0,1.5,3.0,4,6.0,5,2,1.5,1,2), |
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| 12 | array (0.8,2.0,3.0,3,4.0,4,3,2.4,2,3), |
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| 13 | array (0.6,1.1,1.5,1,4.0,3.5,3,2,3,4), |
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| 14 | array (1.0,1.5,3.0,5,6.0,2,1,1.2,2.7,4), |
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| 15 | array (0.8,2.0,3.0,3,5.5,6,3,2,1,1.4), |
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| 16 | array (1.0,1.5,3.0,4,6.0,5,2,1,0.5,0.2)); |
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| 17 | |
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| 18 | |
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| 19 | // Setup a basic graph context with some generous margins to be able |
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| 20 | // to fit the legend |
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| 21 | $graph = new Graph(500,380); |
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| 22 | $graph->SetMargin(40,140,60,40); |
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| 23 | |
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| 24 | // Enable antialias. Note with antiaaliasing only line weight=1 is supported. |
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| 25 | $graph->img->SetAntiAliasing(); |
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| 26 | |
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| 27 | $graph->title->Set("Example of contour plot"); |
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| 28 | $graph->title->SetFont(FF_ARIAL,FS_BOLD,14); |
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| 29 | |
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| 30 | // For contour plots it is custom to use a box style ofr the axis |
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| 31 | $graph->legend->SetPos(0.05,0.5,'right','center'); |
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| 32 | $graph->SetScale('intint'); |
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| 33 | $graph->SetAxisStyle(AXSTYLE_BOXOUT); |
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| 34 | $graph->xgrid->Show(); |
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| 35 | $graph->ygrid->Show(); |
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| 36 | |
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| 37 | |
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| 38 | // A simple contour plot with 19 isobars and flipped vertical range |
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| 39 | $cp = new ContourPlot($data,10,true); |
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| 40 | |
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| 41 | // Display the legend |
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| 42 | $cp->ShowLegend(); |
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| 43 | |
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| 44 | // Invert the legend to th lowest isobar is on top |
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| 45 | $cp->Invertlegend(); |
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| 46 | $graph->Add($cp); |
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| 47 | |
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| 48 | // ... and send the graph back to the browser |
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| 49 | $graph->Stroke(); |
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| 50 | |
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| 51 | ?> |
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