[42] | 1 | <?php // content="text/plain; charset=utf-8" |
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| 2 | require_once ('jpgraph/jpgraph.php'); |
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| 3 | require_once ('jpgraph/jpgraph_scatter.php'); |
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| 4 | |
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| 5 | // Each ballon is specificed by four values. |
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| 6 | // (X,Y,Size,Color) |
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| 7 | $data = array( |
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| 8 | array(1,12,10,'orange'), |
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| 9 | array(3,41,15,'red'), |
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| 10 | array(4,5,19,'lightblue'), |
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| 11 | array(5,70,22,'yellow') |
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| 12 | ); |
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| 13 | |
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| 14 | |
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| 15 | |
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| 16 | // We need to create X,Y data vectors suitable for the |
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| 17 | // library from the above raw data. |
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| 18 | $n = count($data); |
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| 19 | for( $i=0; $i < $n; ++$i ) { |
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| 20 | |
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| 21 | $datax[$i] = $data[$i][0]; |
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| 22 | $datay[$i] = $data[$i][1]; |
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| 23 | |
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| 24 | // Create a faster lookup array so we don't have to search |
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| 25 | // for the correct values in the callback function |
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| 26 | $format[strval($datax[$i])][strval($datay[$i])] = array($data[$i][2],$data[$i][3]); |
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| 27 | |
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| 28 | } |
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| 29 | |
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| 30 | |
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| 31 | // Callback for markers |
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| 32 | // Must return array(width,border_color,fill_color,filename,imgscale) |
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| 33 | // If any of the returned values are '' then the |
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| 34 | // default value for that parameter will be used (possible empty) |
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| 35 | function FCallback($aYVal,$aXVal) { |
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| 36 | global $format; |
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| 37 | return array($format[strval($aXVal)][strval($aYVal)][0],'', |
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| 38 | $format[strval($aXVal)][strval($aYVal)][1],'',''); |
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| 39 | } |
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| 40 | |
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| 41 | // Setup a basic graph |
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| 42 | $graph = new Graph(450,300,'auto'); |
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| 43 | $graph->SetScale("intlin"); |
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| 44 | $graph->SetMargin(40,40,40,40); |
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| 45 | $graph->SetMarginColor('wheat'); |
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| 46 | |
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| 47 | $graph->title->Set("Example of ballon scatter plot with X,Y callback"); |
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| 48 | $graph->title->SetFont(FF_ARIAL,FS_BOLD,12); |
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| 49 | $graph->title->SetMargin(10); |
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| 50 | |
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| 51 | // Use a lot of grace to get large scales since the ballon have |
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| 52 | // size and we don't want them to collide with the X-axis |
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| 53 | $graph->yaxis->scale->SetGrace(50,10); |
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| 54 | $graph->xaxis->scale->SetGrace(50,10); |
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| 55 | |
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| 56 | // Make sure X-axis as at the bottom of the graph and not at the default Y=0 |
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| 57 | $graph->xaxis->SetPos('min'); |
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| 58 | |
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| 59 | // Set X-scale to start at 0 |
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| 60 | $graph->xscale->SetAutoMin(0); |
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| 61 | |
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| 62 | // Create the scatter plot |
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| 63 | $sp1 = new ScatterPlot($datay,$datax); |
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| 64 | $sp1->mark->SetType(MARK_FILLEDCIRCLE); |
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| 65 | |
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| 66 | // Uncomment the following two lines to display the values |
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| 67 | $sp1->value->Show(); |
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| 68 | $sp1->value->SetFont(FF_FONT1,FS_BOLD); |
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| 69 | |
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| 70 | // Specify the callback |
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| 71 | $sp1->mark->SetCallbackYX("FCallback"); |
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| 72 | |
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| 73 | // Add the scatter plot to the graph |
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| 74 | $graph->Add($sp1); |
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| 75 | |
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| 76 | // ... and send to browser |
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| 77 | $graph->Stroke(); |
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| 78 | |
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| 79 | ?> |
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| 80 | |
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| 81 | |
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