matrix_ex04.php

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    <?php
    require_once ('jpgraph/jpgraph.php');
    require_once ('jpgraph/jpgraph_matrix.php');
    require_once ('jpgraph/jpgraph_iconplot.php');

    $data = array(
        array(0,1,2,3,4,5,6,7,8,9,10),
        array(10,9,8,7,6,5,4,3,2,1,0),
        array(0,1,2,3,4,5,6,7,8,9,10),
        array(10,9,8,17,6,5,4,3,2,1,0),
        array(0,1,2,3,4,4,9,7,8,9,10),
        array(8,1,2,3,4,8,3,7,8,9,10),
        array(10,3,5,7,6,5,4,3,12,1,0),
        array(10,9,8,7,6,5,4,3,2,1,0),
    );

    // Do the meshinterpolation once for the data
    doMeshInterpolate($data,4);
    $r=count($data);$c=count($data[0]);

    $width=400; $height=400;
    $graph = new MatrixGraph($width,$height);
    $graph->title->Set('Adding a background image');
    $graph->title->SetFont(FF_ARIAL,FS_BOLD,14);

    // Add a stretched background image
    $graph->SetBackgroundImage('ironrod.jpg',BGIMG_FILLFRAME);
    $graph->SetBackgroundImageMix(50);

    $mp = new MatrixPlot($data,1);
    $mp->SetSize(0.6);
    $mp->SetCenterPos(0.5,0.5);
    $mp->SetLegendLayout(1);

    $graph->Add($mp);
    $graph->Stroke();

    ?>