mulyaxisex1.php

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

    $n = 8;
    for($i=0; $i < $n; ++$i ) {
        $datay[$i] = rand(1,10);
        $datay2[$i] = rand(10,55);
        $datay3[$i] = rand(200,600);
        $datay4[$i] = rand(500,800);
    }

    // Setup the graph
    $graph = new Graph(450,250);
    $graph->SetMargin(40,150,40,30);
    $graph->SetMarginColor('white');

    $graph->SetScale('intlin');
    $graph->title->Set('Using multiple Y-axis');
    $graph->title->SetFont(FF_ARIAL,FS_NORMAL,14);

    $graph->SetYScale(0,'lin');
    $graph->SetYScale(1,'lin');
    $graph->SetYScale(2,'lin');

    $p1 = new LinePlot($datay);
    $graph->Add($p1);

    $p2 = new LinePlot($datay2);
    $p2->SetColor('teal');
    $graph->AddY(0,$p2);
    $graph->ynaxis[0]->SetColor('teal');

    $p3 = new LinePlot($datay3);
    $p3->SetColor('red');
    $graph->AddY(1,$p3);
    $graph->ynaxis[1]->SetColor('red');

    $p4 = new LinePlot($datay4);
    $p4->SetColor('blue');
    $graph->AddY(2,$p4);
    $graph->ynaxis[2]->SetColor('blue');

    // Output line
    $graph->Stroke();
    ?>