1 | <?php // content="text/plain; charset=utf-8" |
---|
2 | // Contour plot example 04 |
---|
3 | |
---|
4 | require_once ('jpgraph/jpgraph.php'); |
---|
5 | require_once ('jpgraph/jpgraph_contour.php'); |
---|
6 | |
---|
7 | $data = array( |
---|
8 | array (12,12,10,10,8,4), |
---|
9 | array (10,10,8,14,10,3), |
---|
10 | array (7,7,13,17,12,8), |
---|
11 | array (4,5,8,12,7,6), |
---|
12 | array (10,8,7,8,10,4)); |
---|
13 | |
---|
14 | // Setup a basic graph context with some generous margins to be able |
---|
15 | // to fit the legend |
---|
16 | $graph = new Graph(500,380); |
---|
17 | $graph->SetMargin(40,140,60,40); |
---|
18 | |
---|
19 | $graph->title->Set("Example of interpolated contour plot"); |
---|
20 | $graph->title->SetFont(FF_ARIAL,FS_BOLD,14); |
---|
21 | $graph->title->SetMargin(10); |
---|
22 | |
---|
23 | // For contour plots it is custom to use a box style ofr the axis |
---|
24 | $graph->legend->SetPos(0.05,0.5,'right','center'); |
---|
25 | $graph->SetScale('intint'); |
---|
26 | |
---|
27 | // Setup axis and grids |
---|
28 | $graph->SetAxisStyle(AXSTYLE_BOXOUT); |
---|
29 | $graph->xgrid->SetLineStyle('dashed'); |
---|
30 | $graph->xgrid->Show(true); |
---|
31 | $graph->ygrid->SetLineStyle('dashed'); |
---|
32 | $graph->ygrid->Show(true); |
---|
33 | |
---|
34 | // A simple contour plot with 10 isobar lines and flipped Y-coordinates |
---|
35 | // Make the data smoother by interpolate the original matrice by a factor of two |
---|
36 | // which will make each grid cell half the original size |
---|
37 | $cp = new ContourPlot($data,10, 2); |
---|
38 | |
---|
39 | $cp->UseHighContrastColor(true); |
---|
40 | |
---|
41 | // Display the legend |
---|
42 | $cp->ShowLegend(); |
---|
43 | |
---|
44 | // Make the isobar lines slightly thicker |
---|
45 | $graph->Add($cp); |
---|
46 | |
---|
47 | // ... and send the graph back to the browser |
---|
48 | $graph->Stroke(); |
---|
49 | |
---|
50 | ?> |
---|