source: trunk/xgraph/jpgraph/Examples/windrose_ex5.php

<?php
require_once ('jpgraph/jpgraph.php');
require_once ('jpgraph/jpgraph_windrose.php');

// Data
$data = array(
    0 => array(1,1,2.5,4),
    1 => array(3,4,1,4),
    3 => array(2,7,4,4,3),
    5 => array(2,7,1,2));

// Text to be added.
$txt=array();
$txt[0] = "It is possible to add arbitrary,multi line, text to a graph. ";
$txt[0] .= "Such a paragraph can have it's text be left, right or center ";
$txt[0] .= "aligned.";
$txt[1] = "This is an example of a right aligned paragraph.";
$txt[2] = "Finally we can show a center aligned paragraph without box.";

// We store the layout for each of the text boxes in an array
// to keep the code clean
$txtlayout = array(
    array(0.97,0.15,25,'left','black','lightblue'),
    array(0.97,0.4,20,'right','black','lightblue'),
    array(0.97,0.7,20,'center','darkred',false,FF_COMIC,FS_NORMAL,12),
);

// Range colors to be used
$rangeColors = array('silver','khaki','orange','brown','blue','navy','maroon','red');

// First create a new windrose graph with a title
$graph = new WindroseGraph(570,430);
$graph->title->Set('Windrose example 5');
$graph->title->SetFont(FF_VERDANA,FS_BOLD,12);
$graph->title->SetColor('navy');

// Setup graph background color
$graph->SetColor('darkgreen@0.7');

// Setup all the defined text boxes
$n = count($txt);
for( $i=0; $i < $n; ++$i ) {
    $txtbox[$i] = new Text($txt[$i]);
    $txtbox[$i]->SetPos($txtlayout[$i][0],$txtlayout[$i][1],'right');
    $txtbox[$i]->SetWordwrap($txtlayout[$i][2]);
    $txtbox[$i]->SetParagraphAlign($txtlayout[$i][3]);
    $txtbox[$i]->SetColor($txtlayout[$i][4]);
    $txtbox[$i]->SetBox($txtlayout[$i][5]);
    if( count($txtlayout[$i]) > 6 )
        $txtbox[$i]->SetFont($txtlayout[$i][6],$txtlayout[$i][7],$txtlayout[$i][8]);
}
$graph->Add($txtbox);

// Create the windrose plot.
$wp = new WindrosePlot($data);

// Set background color for plot area
$wp->SetColor('lightyellow');

// Add a box around the plot
$wp->SetBox();

// Setup the colors for the ranges
$wp->SetRangeColors($rangeColors);

// Adjust the font and font color for scale labels
$wp->scale->SetFont(FF_ARIAL,FS_NORMAL,9);
$wp->scale->SetFontColor('navy');

// Set the diameter and position for plot
$wp->SetSize(190);
$wp->SetPos(0.35,0.53);

$wp->SetZCircleSize(0.2);

// Adjust the font and font color for compass directions
$wp->SetFont(FF_ARIAL,FS_NORMAL,10);
$wp->SetFontColor('darkgreen');

// Adjust the margin to the compass directions
$wp->SetLabelMargin(50);

// Adjust grid colors
$wp->SetGridColor('silver','blue');

// Add (m/s) text to legend
$wp->legend->SetText('(m/s)');
$wp->legend->SetMargin(20,5);

// Add plot and send back to client
$graph->Add($wp);
$graph->Stroke();
?>