hello
if i run the following code i get error message:
Interface HASH(0X25C224) is not known!
on windows xp activeperl 5.10

use PDL;
use PDL::Graphics2D; #imports imag2d() and twiddle()
#use PDL::Graphics::PGPLOT::Window; 

my $winopt = {Device => '/GW', WindowWidth => 7, Aspect => 1}; 
my $w = PDL::Graphics2D->new($winopt); 
  $a = sequence(64,48,3);  # make test RGB image
  $a = $a->mv(2,0);        # color must be dim(0) with size [0..4]
  $a /= $a->max;           # pixel values in [0.0,1.0]
  $a = sin(10*$a);
  $w = imag2d($a);

[download]

is this just special to windows os. i know imag2d is new, also PDL::Graphics2D

second question:
running any example such as the following one from the pdl book http://www.johnlapeyre.com/pdl/pdldoc/newbook/node6.html produce a nagging "close" small window above the draw window such as in this beautiful arrow image:
http://img716.imageshack.us/img716/3179/pdl.png
how to get rid from it
 
use PDL;
use PDL::Graphics::PGPLOT;
#my $win1 = dev('/GW', {Aspect => 1, WindowWidth => 7});
$x = xlinvals(zeroes(100,100), -5, 5); 
$y = ylinvals(zeroes(100,100), -5, 5); 
$z = sin($x*$y/2); 
imag $z; hold; 
#Show the partial derivatives wrt. x & y as vectors 
$xcomp = $x*cos($x*$y/2)/2; 
$ycomp = $y*cos($x*$y/2)/2; 
  #We want to show only every sixth vector for clarity 
$s = '0:-1:10,0:-1:10'; 
  #Finally we need to map the final 10x10 array to the 100x100 image 
$tr = pdl(0,10,0,0,0,10); 
vect $xcomp->slice($s), $ycomp->slice($s), {Transform=>$tr};

[download]
on the other hand the site http://cpan.uwinnipeg.ca/PPMPackages/10xx/contains opengl v 0.62 and PDL 2.4.7 while here http://www.perlmonks.org/?node=PDL-2.4.7+released syphilis said that it requires v. 0.63 . so i have downloaded it from http://www.bribes.org/perl/ppmdir.html
but here:http://sourceforge.net/apps/mediawiki/pdl/index.php?title=Installing_PDL_on_Windows it is said that PDL packages expect a static freeglut library and not a dynamic freeglut library .
thanks for any help

In reply to PDL questions by Anonymous Monk

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