54 lines
1.3 KiB
PHP
54 lines
1.3 KiB
PHP
<?php
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include ("../jpgraph.php");
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include ("../jpgraph_line.php");
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// Callback to negate the argument
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function _cb_negate($aVal) {
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return round(-$aVal);
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}
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// A fake depth curve
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$ydata = array(0,1,4,5,8,9,10,14,16,16,16,18,20,20,20,22,22.5,22,19,19,15,15,15,15,10,10,10,6,5,5,5,4,4,2,1,0);
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// Negate all data
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$n = count($ydata);
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for($i=0; $i<$n; ++$i) {
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$ydata[$i] = round(-$ydata[$i]);
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}
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// Basic graph setup
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$graph = new Graph(400,300,"auto");
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$graph->SetScale("linlin");
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$graph->img->SetMargin(50,50,60,40);
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$graph->SetMarginColor('darkblue');
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$graph->SetColor('darkblue');
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$graph->SetAxisStyle(AXSTYLE_BOXOUT);
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$graph->SetBackgroundImage("blueblack400x300grad.png",1);
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//$graph->SetBackgroundImage("lightbluedarkblue400x300grad.png",1);
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$graph->title->Set("Depth curve. Dive #2");
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$graph->title->SetFont(FF_FONT1,FS_BOLD);
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$graph->title->SetColor("white");
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$graph->subtitle->Set("(Negated Y-axis)");
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$graph->subtitle->SetFont(FF_FONT1,FS_NORMAL);
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$graph->subtitle->SetColor("white");
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// Setup axis
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$graph->yaxis->SetLabelFormatCallback("_cb_negate");
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$graph->xaxis->SetColor("lightblue","white");
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$graph->yaxis->SetColor("lightblue","white");
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$graph->ygrid->SetColor("blue");
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$lp1 = new LinePlot($ydata);
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$lp1->SetColor("yellow");
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$lp1->SetWeight(2);
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$graph->Add($lp1);
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$graph->Stroke();
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?>
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