matrix_layout_ex1.php
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<?php
require_once ('jpgraph/jpgraph.php');
require_once ('jpgraph/jpgraph_matrix.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),
);
 
doMeshInterpolate($data,4);
 
$graph = new MatrixGraph(850,580);
$graph->title->Set('Matrix layout example');
$graph->title->SetFont(FF_ARIAL,FS_BOLD,14);
 
$mp = array();
$n = 5;
for($i=0; $i < $n; ++$i){
    $mp[$i] = new MatrixPlot($data);
    $mp[$i]->colormap->SetMap($i);
    if( $i < 2 )
        $mp[$i]->SetSize(0.35);
    else
        $mp[$i]->SetSize(0.21);    
    // We need to make the legend a bit smaller since by 
    // defalt has a  ~45% height 
    $mp[$i]->legend->SetModuleSize(15,2);
}
 
$hor1 = new LayoutHor(array($mp[0],$mp[1]));
$hor2 = new LayoutHor(array($mp[2],$mp[3],$mp[4]));
$vert = new LayoutVert(array($hor1,$hor2));
$vert->SetCenterPos(0.45,0.5);
 
$graph->Add($vert);
$graph->Stroke();
 
?>