<?php
 
    require_once ('graph2d.class.php');
 
 
    $xmin=0.0;
 
    $xmax=1.0;
 
    $xstep=0.001;
 
 
    $ymin=0.0;
 
    $ymax=1.0;
 
    $ystep=0.1;
 
 
    $xarr=array();
 
    $yarr1=array();
 
    $yarr2=array();
 
    $yarr3=array();
 
 
    $n=1001;
 
    for ($i=0; $i<$n; $i++)
 
    {
 
        $xarr[$i]=$xmin+$xstep*$i;
 
        $yarr1[$i]=$xarr[$i];
 
        $yarr2[$i]=$xarr[$i]*$xarr[$i];
 
        $yarr3[$i]=sqrt ($xarr[$i]);
 
    }
 
 
    $test=new graph2d ("jpeg", 700, 350, 60, 20, 20, 40);
 
 
    $test->SetAxisScales ($xmin, $xmax, 0.1, 1, $ymin, $ymax, $ystep, 1);
 
 
    $test->SetTitle ("Test");
 
    $test->SetXLegend ("X");
 
    $test->SetYLegend ("Y");
 
 
    $test->GraphCoord();
 
 
    $test->Draw($xarr, $yarr1, 0xFF, 0, 0);
 
 
    $test->Draw($xarr, $yarr2, 0, 0xFF, 0);
 
 
    $test->Draw($xarr, $yarr3, 0, 0, 0xFF);
 
 
    $test->ImageOut("");
 
 
    $test->Close();
 
 
?>
 
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