Re: [gnuplot]: set term size & ConTeXt

[Ethan M. <merritt@u.washington.edu>]

On Monday 19 June 2006 01:19 pm, Petr Mikulik wrote:
> >   `plot "foo" binary filetype=avs with rgbimage`
>
> I wish that gnuplot can read also png images. Usually gnuplot is
> compiled with libpng, so that should not be a problem.

It's not quite that simple.  AVS is a streaming format.
You can read it one pixel at a time and process as you go.
PNG is much more complicated. I believe that the minimum
you can read at one go is an entire line, and the more
normal operation is to read in an entire image. Furthermore,
there are numerous PNG encoding options, so you have to be
prepared for reading and interpreting a lot of envelope
information.

And that's before we even get into the whole issues of
truecolor/palette/colorspace/transparency/...

I honestly think the best way to read in a png image is
to filter it through ImageMagick and generate an AVS stream.

   plot "< convert image.png avs:-" binary filetype=avs

-- 
Ethan A Merritt
Biomolecular Structure Center
University of Washington, Seattle WA