[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_line.php'); |
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| 4 | require_once ('jpgraph/jpgraph_date.php'); |
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| 5 | |
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| 6 | // Create a data set in range (50,70) and X-positions |
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| 7 | DEFINE('NDATAPOINTS',360); |
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| 8 | DEFINE('SAMPLERATE',240); |
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| 9 | $start = time(); |
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| 10 | $end = $start+NDATAPOINTS*SAMPLERATE; |
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| 11 | $data = array(); |
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| 12 | $xdata = array(); |
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| 13 | for( $i=0; $i < NDATAPOINTS; ++$i ) { |
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| 14 | $data[$i] = rand(50,70); |
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| 15 | $xdata[$i] = $start + $i * SAMPLERATE; |
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| 16 | } |
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| 17 | |
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| 18 | |
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| 19 | // Create the new graph |
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| 20 | $graph = new Graph(540,300); |
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| 21 | |
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| 22 | // Slightly larger than normal margins at the bottom to have room for |
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| 23 | // the x-axis labels |
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| 24 | $graph->SetMargin(40,40,30,130); |
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| 25 | |
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| 26 | // Fix the Y-scale to go between [0,100] and use date for the x-axis |
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| 27 | $graph->SetScale('datlin',0,100); |
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| 28 | $graph->title->Set("Example on Date scale"); |
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| 29 | |
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| 30 | // Set the angle for the labels to 90 degrees |
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| 31 | $graph->xaxis->SetLabelAngle(90); |
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| 32 | |
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| 33 | // It is possible to adjust the density for the X-axis as well |
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| 34 | // The following call makes the dates a little more sparse |
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| 35 | // $graph->SetTickDensity(TICKD_NORMAL,TICKD_SPARSE); |
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| 36 | |
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| 37 | // The automatic format string for dates can be overridden |
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| 38 | // $graph->xaxis->scale->SetDateFormat('h:i'); |
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| 39 | |
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| 40 | // Adjust the start/end to a specific alignment |
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| 41 | $graph->xaxis->scale->SetTimeAlign(MINADJ_15); |
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| 42 | |
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| 43 | $line = new LinePlot($data,$xdata); |
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| 44 | $line->SetLegend('Year 2005'); |
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| 45 | $line->SetFillColor('lightblue@0.5'); |
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| 46 | $graph->Add($line); |
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| 47 | $graph->Stroke(); |
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| 48 | ?> |
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