polarex5.php

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    <?php // content="text/plain; charset=utf-8"
    // A simple Polar graph, example 2

    include "jpgraph/jpgraph.php";
    include "jpgraph/jpgraph_polar.php";

    $data = array(0,1,10,2,30,25,40,60,
              50,110,60,160,70,210,75,230,80,260,
              85,270,90,280,
              95,270,100,260,105,230,
              110,210,120,160,130,110,140,60,
              150,25,170,2,180,1);

    $graph = new PolarGraph(300,350);
    $graph->SetScale('log');

    // Show both major and minor grid lines
    $graph->axis->ShowGrid(true,true);

    $graph->title->Set('Polar plot #5');
    $graph->title->SetFont(FF_FONT2,FS_BOLD);
    $graph->title->SetColor('navy');

    // Hide last labels on the Radius axis
    // They intersect with the box otherwise
    $graph->axis->HideLastTickLabel();

    $p = new PolarPlot($data);
    $p->SetFillColor('lightred@0.5');

    $graph->Add($p);

    $graph->Stroke();

    ?>