53 lines
1.3 KiB
PHP
53 lines
1.3 KiB
PHP
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<?php
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include ("../jpgraph.php");
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include ("../jpgraph_scatter.php");
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$numpoints=50;
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$k=0.05;
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// Create some data points
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for($i=0; $i<$numpoints; ++$i) {
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$datay[$i]=exp(-$k*$i)*cos(2*M_PI/10*$i);
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}
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// A format callbakc function
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function mycallback($l) {
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return sprintf("%02.2f",$l);
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}
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// Setup the basic parameters for the graph
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$graph = new Graph(400,200,"auto");
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$graph->SetScale("intlin");
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$graph->SetShadow();
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$graph->SetBox();
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$graph->title->Set("Impuls Example 3");
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$graph->title->SetFont(FF_FONT1,FS_BOLD);
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// Set format callback for labels
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$graph->yaxis->SetLabelFormatCallback("mycallback");
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// Set X-axis at the minimum value of Y-axis (default will be at 0)
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$graph->xaxis->SetPos("min"); // "min" will position the x-axis at the minimum value of the Y-axis
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// Extend the margin for the labels on the Y-axis and reverse the direction
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// of the ticks on the Y-axis
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$graph->yaxis->SetLabelMargin(12);
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$graph->xaxis->SetLabelMargin(6);
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$graph->yaxis->SetTickSide(SIDE_LEFT);
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$graph->xaxis->SetTickSide(SIDE_DOWN);
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// Create a new impuls type scatter plot
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$sp1 = new ScatterPlot($datay);
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$sp1->mark->SetType(MARK_SQUARE);
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$sp1->mark->SetFillColor("red");
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$sp1->SetImpuls();
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$sp1->SetColor("blue");
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$sp1->SetWeight(1);
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$sp1->mark->SetWidth(3);
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$graph->Add($sp1);
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$graph->Stroke();
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?>
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