Pure magic, especially this line:

my $bmp = pack 'a2 V V V l< l< l< v v V V l< l< V V',
    'BM', $len + 54, 0, 54, 40, $attrs[1], $attrs[2], 1, 24, $len, 0, 
+0, 0, 0;

[download]

I tried it immediately but i can't view the file with various image processing software. In some it is simply black, some other reject it.

Examining the file i get:

karls-mac-mini:monks karl$ file mandelbrot.bmp 
mandelbrot.bmp: PC bitmap, Windows 3.x format, 1280 x 1024 x 24

[download]

This looks good, but:

karls-mac-mini:monks karl$ identify mandelbrot.bmp 
identify: unrecognized compression `mandelbrot.bmp'.

[download]

Or something is wrong with my GD installation. But i don't think so because the script would complain if something went wrong.

Thank you very much for advice. Perhaps you have a hint how to continue.

Best regards, Karl

«The Crux of the Biscuit is the Apostrophe»

In reply to Re^2: About GD Image Data Output Methods by karlgoethebier
in thread About GD Image Data Output Methods [SOLVED] by karlgoethebier

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.