windrose_ex2.php

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

    // Data can be specified using both ordinal index of the axis
    // as well as the direction label
    $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));

    // First create a new windrose graph with a title
    $graph = new WindroseGraph(400,400);

    // Setup title
    $graph->title->Set('Windrose example 2');
    $graph->title->SetFont(FF_VERDANA,FS_BOLD,12);
    $graph->title->SetColor('navy');

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

    // Make it have 8 compass direction
    $wp->SetType(WINDROSE_TYPE8);

    // Setup the weight of the laegs for the different ranges
    $weights = array_fill(0,8,10);
    $wp->SetRangeWeights($weights);

    // Adjust the font and font color for scale labels
    $wp->scale->SetFont(FF_TIMES,FS_NORMAL,11);
    $wp->scale->SetFontColor('navy');

    // Set the diametr for the plot to 160 pixels
    $wp->SetSize(200);

    // Set the size of the innermost center circle to 30% of the plot size
    $wp->SetZCircleSize(0.2);

    // Adjust the font and font color for compass directions
    $wp->SetFont(FF_ARIAL,FS_NORMAL,12);
    $wp->SetFontColor('darkgreen');

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