Subversion-Projekte lars-tiefland.php_share

<?php

//

// Basic example on how to use custom tickmark feature to have a label

// at the start of each month.

//

include ("../jpgraph.php");

include ("../jpgraph_line.php");

include ("../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_NORMAL,12);

//

// 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,10);

$graph->yaxis->SetFont(FF_TIMES,FS_NORMAL,10);

// Add a X-grid

$graph->xgrid->Show();

// Create the plot line

$p1 = new LinePlot($datay,$datax);

$p1->SetColor('teal');

$graph->Add($p1);

// Output graph

$graph->Stroke();

?>