after an enervating installation-process including recompilation of gcc-2.95.3 to support f77 and several problems with lib-references and glx i finally succeeded in the installation of PDL v2.4.0 on my Linux-2.4.20-Athlon-System with perl, v5.8.0 built for i686-linux-thread-multi.

As a reward i now want to enjoy a visual pleasant 3D-Plot which i saw in a PC-journal. The plot should show a 3d-function in three partially coloured lattice-levels on top of each other.

#!/usr/bin/perl

use strict;
use warnings;

use PDL;
use PDL::Graphics::TriD;
my $size = 25;

# compute coordinates of the surface
my $x = (xvals zeroes $size+1, $size+1)/$size;
my $y = (yvals zeroes $size+1, $size+1)/$size;
my $z = 0.5 + 0.5 * (sin($x*6.3) * sin($y*6.3)) ** 3;

# coordinates determ color
my $r=$x;
my $g=$y;
my $b=$z;

# create 3d-plot
imag3d [$x,$y,$z];
hold3d();

# ... colored surface above
imag3d_ns [$x,$y,$z], [$r,$g,$b];

# ... colored lattice below
lattice3d [$x,$y,$z-1], [$r,$g,$b];
[download]

# perl pdl
perl: error while loading shared libraries: /usr/local/lib/perl5/site_
+perl/5.8.0/i686-linux-thread-multi/auto/PDL/Graphics/OpenGL/OpenGL.so
+: undefined symbol: gluOrtho2D
[download]

thanks in advance, tos

p.s.: which documation would you recommend for piddle-newbies ?