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

//

$datay = array();

$datax = array();

$ts = time();

$n=15; // Number of data points

for($i=0; $i < $n; ++$i ) {

    $datax[$i] = $ts+$i*700000;

    $datay[$i] = rand(5,60);

}

// Now get labels at the start of each month

$dateUtils = new DateScaleUtils();

list($tickPositions,$minTickPositions) = $dateUtils->GetTicks($datax);

// We add some grace to the end of the X-axis scale so that the first and last

// data point isn't exactly at the very end or beginning of the scale

$grace = 400000;

$xmin = $datax[0]-$grace;

$xmax = $datax[$n-1]+$grace;

//

// 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

$graph->SetScale('intlin',0,0,$xmin,$xmax);

$graph->title->Set('Basic example with manual ticks');

$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

$graph->xaxis->SetTickPositions($tickPositions,$minTickPositions);

// The labels should be formatted at dates with "Year-month"

$graph->xaxis->SetLabelFormatString('My',true);

// Use Ariel font

$graph->xaxis->SetFont(FF_ARIAL,FS_NORMAL,9);

// 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();

?>