This works for me on both Linux and latest PDL with Strawberry Perl, albeit using an actual 3D Z-axis rather than colours: 
use PDL::Graphics::TriD;
$t = sequence(10)+1;
$x = log($t)->dummy(1,10);
$y = ($t**2)->dummy(0,10);
$x = $x + $y/10;
$z = $x+$y;
points3d [$x,$y,$z];

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In reply to Re^3: which function in PDL can do the same thing as matlab pcolor? by etj
in thread which function in PDL can do the same thing as matlab pcolor? by toothedsword

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