The line 228 is in the Tk module, but yeah, it's being called through the write method. Commenting that line out eliminates the error.

Assuming that the 256 colour limit is specific to the gif is a good guess. I can play with the palette values to see if that does it. I assume it's a gif thing, as just displaying the image (part of the original code I derived the example from) seems to work fine.

The quotes don't seem to matter, btw. It seems to do what I want, which I think is a result of specifying the options using the hash-like -var => value method of passing parameters.

And yeah, I'm investigating other tools. I'd forgotten about GD though. Funny that. Thanks!

elbieelbieelbie


In reply to (elbie): too many colors, using Tk to write images by elbie
in thread too many colors, using Tk to write images by elbie

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.