source: trunk/xgraph/jpgraph/Examples/windrose_layout_ex1.php

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

// Some data for the five windrose plots
$data = array(
        array(
        1 => array(10,10,13,7),
                2 => array(2,8,10),
                4 => array(1,12,22)),
        array(
        4 => array(12,8,2,3),
        2 => array(5,4,4,5,2)),
        array(
        1 => array(12,8,2,3),
        3 => array(5,4,4,5,2)),
        array(
        2 => array(12,8,2,3),
        3 => array(5,4,4,5,2)),
        array(
        4 => array(12,8,2,3),
        6 => array(5,4,4,5,2))
);

// Legend range colors
$rangecolors = array('green','yellow','red','brown');

// Create a windrose graph with titles
$graph = new WindroseGraph(750,700);

$graph->title->Set('Multiple plots with automatic layout');
$graph->title->SetFont(FF_ARIAL,FS_BOLD,14);

// Setup the individual windrose plots
$wp = array();
for( $i=0; $i < 5; ++$i ) {
        $wp[$i] = new WindrosePlot($data[$i]);
        $wp[$i]->SetType(WINDROSE_TYPE8);
        if( $i < 2) {
                $wp[$i]->SetSize(0.28);
        }
        else {
                $wp[$i]->legend->Hide();
                $wp[$i]->SetSize(0.16);
                $wp[$i]->SetCenterSize(0.25);
        }
        $wp[$i]->SetRangeColors($rangecolors);
}

// Position with two rows. Two plots in top row and three plots in
// bottom row.
$hl1 = new LayoutHor( array( $wp[0], $wp[1] ) );
$hl2 = new LayoutHor( array( $wp[2], $wp[3], $wp[4] ) );
$vl = new LayoutVert( array( $hl1, $hl2) );

$graph->Add($vl);
$graph->Stroke();
?>