[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 | $ydata = array(); |
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| 12 | $xdata = array(); |
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| 13 | |
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| 14 | for( $i=0; $i < (NDATAPOINTS/1); ++$i ) { |
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| 15 | $ydata[$i] = rand(50,70); |
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| 16 | $xdata[$i] = $start + $i * SAMPLERATE; |
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| 17 | //$xdata[$i] = time() + $i * SAMPLERATE; |
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| 18 | //echo $xdata[$i]," \n"; |
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| 19 | //sleep(1); |
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| 20 | } |
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| 21 | |
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| 22 | function maFormatDate(&$aVal) { |
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| 23 | $aVal = date('Y-m-d H:i',$aVal); |
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| 24 | } |
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| 25 | |
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| 26 | // Apply this format to all time values in the data to prepare it to be display |
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| 27 | array_walk($xdata,'maFormatDate'); |
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| 28 | |
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| 29 | // Create the new graph |
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| 30 | $graph = new Graph(600,450); |
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| 31 | |
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| 32 | // Fix the Y-scale to go between [0,100] and use date for the x-axis |
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| 33 | $graph->SetScale('textlin',0,100); |
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| 34 | //$graph->SetScale('textlin'); |
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| 35 | $graph->title->Set("Example on Date scale"); |
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| 36 | |
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| 37 | // Slightly larger than normal margins at the bottom to have room for |
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| 38 | // the x-axis labels |
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| 39 | $graph->SetMargin(40,40,30,130); |
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| 40 | |
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| 41 | // Set the angle for the labels to 90 degrees |
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| 42 | $graph->xaxis->SetLabelAngle(90); |
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| 43 | |
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| 44 | //$line = new LinePlot($data,$xdata); |
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| 45 | $line = new LinePlot($ydata); |
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| 46 | $line->SetLegend('Year 2013'); |
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| 47 | $line->SetFillColor('lightred@0.8'); |
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| 48 | |
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| 49 | $graph->xaxis->SetTickLabels($xdata); |
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| 50 | $graph->xaxis->SetTextLabelInterval(NDATAPOINTS/10); |
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| 51 | |
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| 52 | //$graph->Add($line); |
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| 53 | $line->SetColor('red'); |
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| 54 | $graph->AddLine($line); |
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| 55 | |
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| 56 | |
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| 57 | $graph->Stroke(); |
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| 58 | |
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| 59 | ?> |
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