thank you BrowserUk, as always you supply a clear specific answer for the non prof users. i have applied your suggestion
my $w = PDL::Graphics2D->new('PGPLOT');
and added also use PGPLOT;
and yes i can run all the code and display a window like this
http://img409.imageshack.us/img409/1384/erroriu.png
but with an error at the final line
"Can't locate object method "imag2d" via package "PDL" at err.pl line 13"
this is the same using windows xp and linux mint
i choose linux mint because it is super easy to install modules directly from their site. and indeed it is the first time i am using linux. also i want to thank zentara for the second version of the "PDL 3d image cube" example in www.perlmonks.org/?node_id=591731
it is working well rotate and zoom in and out with the mouse.
regards

In reply to Re^4: PDL questions by Anonymous Monk
in thread PDL questions by Anonymous Monk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.