Inizializzazione

jpgraph-3.5.0b1/src/Examples/manualtickex3.php

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+<?php // content="text/plain; charset=utf-8"
+//
+// Basic example on how to use custom tickmark feature to have a label
+// at the start of each month.
+//
+require_once ('jpgraph/jpgraph.php');
+require_once ('jpgraph/jpgraph_line.php');
+require_once ('jpgraph/jpgraph_utils.inc.php');
+
+// 
+// Create some random data for the plot. We use the current time for the
+// first X-position
+//
+$f = new FuncGenerator('cos($x)+1.5*cos(2*$x)');
+list($datax,$datay) = $f->E(0,10);
+
+// Now get labels at 1/2 PI intervall
+$tickPositions = array();
+$tickLabels = array();
+$tickPositions[0] = 0;
+$tickLabels[0] = '0';
+for($i=1; $i/2*M_PI < 11 ; ++$i ) {
+    $tickPositions[$i] = $i/2*M_PI;
+    if( $i % 2 )
+	$tickLabels[$i] = $i.'/2'.SymChar::Get('pi');
+    else
+	$tickLabels[$i] = ($i/2).SymChar::Get('pi');
+}
+
+$n = count($datax);
+$xmin = $datax[0];
+$xmax = $datax[$n-1];
+
+//
+// The code to setup a very basic graph
+//
+$graph = new Graph(400,200);
+
+// We use an integer scale on the X-axis since the positions on the X axis
+// are assumed to be UNI timestamps
+$graph->SetScale('linlin',0,0,$xmin,$xmax);
+$graph->title->Set('Example with manual tick labels');
+$graph->title->SetFont(FF_ARIAL,FS_BOLD,12);
+$graph->title->SetColor('white');
+
+// Setup a abackground gradient
+$graph->SetBackgroundGradient('darkred:0.7', 'black', 2, BGRAD_MARGIN);
+$graph->SetPlotGradient('black','darkred:0.8', 2);
+
+// Make sure that the X-axis is always at the bottom of the scale
+// (By default the X-axis is alwys positioned at Y=0 so if the scale
+// doesn't happen to include 0 the axis will not be shown)
+$graph->xaxis->SetPos('min');
+
+// Now set the tic positions
+$graph->xaxis->SetMajTickPositions($tickPositions,$tickLabels);
+
+// Use Times font
+$graph->xaxis->SetFont(FF_TIMES,FS_NORMAL,11);
+$graph->yaxis->SetFont(FF_TIMES,FS_NORMAL,9);
+
+// Set colors for axis
+$graph->xaxis->SetColor('lightgray');
+$graph->yaxis->SetColor('lightgray');
+
+// Add a X-grid
+$graph->xgrid->Show();
+
+// Show ticks outwards
+$graph->xaxis->SetTickSide(SIDE_DOWN);
+$graph->xaxis->SetLabelMargin(8);
+$graph->yaxis->SetTickSide(SIDE_LEFT);
+
+// Setup a filled y-grid
+//$graph->ygrid->SetFill(true,'darkgray:1.55@0.7','darkgray:1.6@0.7');
+$graph->ygrid->SetStyle('dotted');
+$graph->xgrid->SetStyle('dashed');
+
+// Create the plot line
+$p1 = new LinePlot($datay,$datax);
+$p1->SetWeight(2);
+$p1->SetColor('orange:0.9');
+$p1->SetFillColor('white@0.7');
+$graph->Add($p1);
+
+// Output graph
+$graph->Stroke();
+
+?>
+
+