61 lines
1.6 KiB
PHP
Executable File
61 lines
1.6 KiB
PHP
Executable File
<?php // content="text/plain; charset=utf-8"
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require_once ('jpgraph/jpgraph.php');
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require_once ('jpgraph/jpgraph_line.php');
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require_once ('jpgraph/jpgraph_bar.php');
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function toFahrenheit($aVal) {
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return round(($aVal*9/5)+32,2);
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}
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function toCelcius($aVal) {
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return round(($aVal-32)*5/9,2);
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}
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$datay =array(2,3,8,19,7,17,6,22);
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// Create the graph.
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$graph = new Graph(400,280);
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// Slightly bigger margins than default to make room for titles
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$graph->SetMargin(50,60,40,45);
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$graph->SetMarginColor('white');
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// Setup the scales for X,Y and Y2 axis
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$graph->SetScale("intlin"); // X and Y axis
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$graph->SetY2Scale("lin"); // Y2 axis
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// Overall graph title
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$graph->title->Set('Synchronized Y & Y2 scales');
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$graph->title->SetFont(FF_ARIAL,FS_BOLD,12);
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// Title for X-axis
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$graph->xaxis->title->Set('Measurement');
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$graph->xaxis->title->SetMargin(5);
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$graph->xaxis->title->SetFont(FF_ARIAL,FS_NORMAL,11);
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// Create Y data set
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$lplot = new LinePlot($datay);
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$graph->yaxis->title->Set('Celcius (C)');
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$graph->yaxis->title->SetMargin(5);
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$graph->yaxis->title->SetFont(FF_ARIAL,FS_NORMAL,11);
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// ... and add the plot to the Y-axis
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$graph->Add($lplot);
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// Create Y2 scale data set
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$l2plot = new LinePlot($datay);
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$l2plot->SetWeight(0);
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$graph->y2axis->title->Set('Fahrenheit (F)');
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$graph->y2axis->title->SetMargin(5); // Some extra margin to clear labels
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$graph->y2axis->title->SetFont(FF_ARIAL,FS_NORMAL,11);
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$graph->y2axis->SetLabelFormatCallback('toFahrenheit');
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$graph->y2axis->SetColor('navy');
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// ... and add the plot to the Y2-axis
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$graph->AddY2($l2plot);
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$graph->Stroke();
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?>
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