piebkgex1.php

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    <?php // content="text/plain; charset=utf-8"
    require_once ("jpgraph/jpgraph.php");
    require_once ("jpgraph/jpgraph_pie.php");
    require_once ("jpgraph/jpgraph_pie3d.php");

    // Some data
    $data = array(
        array(80,18,15,17),
        array(35,28,6,34),
        array(10,28,10,5),
        array(22,22,10,17));

    $piepos = array(0.2,0.4,0.65,0.28,0.25,0.75,0.8,0.75);
    $titles = array('USA','Sweden','South America','Australia');

    $n = count($piepos)/2;

    // A new graph
    $graph = new PieGraph(550,400,'auto');

    // Specify margins since we put the image in the plot area
    $graph->SetMargin(1,1,40,1);
    $graph->SetMarginColor('navy');
    $graph->SetShadow(false);

    // Setup background
    $graph->SetBackgroundImage('worldmap1.jpg',BGIMG_FILLPLOT);

    // Setup title
    $graph->title->Set("Pie plots with background image");
    $graph->title->SetFont(FF_ARIAL,FS_BOLD,20);
    $graph->title->SetColor('white');

    $p = array();
    // Create the plots
    for( $i=0; $i < $n; ++$i ) {
        $d = "data$i";
        $p[] = new PiePlot3D($data[$i]);
    }

    // Position the four pies
    for( $i=0; $i < $n; ++$i ) {
        $p[$i]->SetCenter($piepos[2*$i],$piepos[2*$i+1]);
    }

    // Set the titles
    for( $i=0; $i < $n; ++$i ) {
        $p[$i]->title->Set($titles[$i]);
        $p[$i]->title->SetColor('white');
        $p[$i]->title->SetFont(FF_ARIAL,FS_BOLD,12);
    }

    // Label font and color setup
    for( $i=0; $i < $n; ++$i ) {
        $p[$i]->value->SetFont(FF_ARIAL,FS_BOLD);
        $p[$i]->value->SetColor('white');
    }

    // Show the percetages for each slice
    for( $i=0; $i < $n; ++$i ) {
        $p[$i]->value->Show();
    }

    // Label format
    for( $i=0; $i < $n; ++$i ) {
        $p[$i]->value->SetFormat("%01.1f%%");
    }

    // Size of pie in fraction of the width of the graph
    for( $i=0; $i < $n; ++$i ) {
        $p[$i]->SetSize(0.15);
    }

    // Format the border around each slice

    for( $i=0; $i < $n; ++$i ) {
        $p[$i]->SetEdge(false);
        $p[$i]->ExplodeSlice(1);
    }

    // Use one legend for the whole graph
    $p[0]->SetLegends(array("May","June","July","Aug"));
    $graph->legend->Pos(0.05,0.35);
    $graph->legend->SetShadow(false);

    for( $i=0; $i < $n; ++$i ) {
        $graph->Add($p[$i]);
    }

    $graph->Stroke();
    ?>