Inizializzazione

jpgraph-3.5.0b1/src/Examples/impulsex3.php

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+<?php // content="text/plain; charset=utf-8"
+require_once ('jpgraph/jpgraph.php');
+require_once ('jpgraph/jpgraph_scatter.php');
+
+$numpoints=50;
+$k=0.05;
+
+// Create some data points
+for($i=0; $i<$numpoints; ++$i) {
+	$datay[$i]=exp(-$k*$i)*cos(2*M_PI/10*$i);
+}
+
+// A format callbakc function
+function mycallback($l) {
+	return sprintf("%02.2f",$l);
+}
+
+// Setup the basic parameters for the graph
+$graph = new Graph(400,200);
+$graph->SetScale("intlin");
+$graph->SetShadow();
+$graph->SetBox();
+
+$graph->title->Set("Impuls Example 3");
+$graph->title->SetFont(FF_FONT1,FS_BOLD);
+
+// Set format callback for labels
+$graph->yaxis->SetLabelFormatCallback("mycallback");
+
+// Set X-axis at the minimum value of Y-axis (default will be at 0)
+$graph->xaxis->SetPos("min");	// "min" will position the x-axis at the minimum value of the Y-axis
+
+// Extend the margin for the labels on the Y-axis and reverse the direction
+// of the ticks on the Y-axis
+$graph->yaxis->SetLabelMargin(12);
+$graph->xaxis->SetLabelMargin(6);
+$graph->yaxis->SetTickSide(SIDE_LEFT);
+$graph->xaxis->SetTickSide(SIDE_DOWN);
+
+// Create a new impuls type scatter plot
+$sp1 = new ScatterPlot($datay);
+$sp1->mark->SetType(MARK_SQUARE);
+$sp1->mark->SetFillColor("red");
+$sp1->SetImpuls();
+$sp1->SetColor("blue");
+$sp1->SetWeight(1);
+$sp1->mark->SetWidth(3);
+
+$graph->Add($sp1);
+
+$graph->Stroke();
+
+?>