windrose_ex7.php
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<?php // content="text/plain; charset=utf-8"
require_once ('jpgraph/jpgraph.php');
require_once ('jpgraph/jpgraph_windrose.php');
 
$data = array(
    2 => array(1,15,7.5,2),
    5 => array(1,1,1.5,2),
    7 => array(1,2,10,3,2),
    9 => array(2,3,1,3,1,2),
    );
 
// First create a new windrose graph with a title
$graph = new WindroseGraph(400,450);
$graph->title->Set('Windrose example 7');
$graph->title->SetFont(FF_VERDANA,FS_BOLD,14);
$graph->title->SetColor('navy');
 
// Create the free windrose plot.
$wp = new WindrosePlot($data);
$wp->SetType(WINDROSE_TYPE16);
 
// Add some "arbitrary" text to the center
$wp->scale->SetZeroLabel("SOx\n8%%");
 
// Localize the compass direction labels into Swedish
// Note: The labels for data must now also match the exact
// string for the compass directions.
$se_CompassLbl = array('O','ONO','NO','NNO','N','NNV','NV','VNV',
                          'V','VSV','SV','SSV','S','SSO','SO','OSO');
$wp->SetCompassLabels($se_CompassLbl);
 
// Localize the "Calm" text into Swedish and make the circle
// slightly bigger than default
$se_calmtext = 'Lugnt';
$wp->legend->SetCircleText($se_calmtext);
$wp->legend->SetCircleRadius(20);
 
// Adjust the displayed ranges
$ranges = array(1,3,5,8,12,19,29);
$wp->SetRanges($ranges);
//$wp->SetAntiAlias(true);
 
// Set the scale to always have max value of 30 with a step
// size of 12.
$wp->scale->Set(30,12);
 
// Finally add it to the graph and send back to client
$graph->Add($wp);
$graph->Stroke();
?>