klaus schilling ha scritto:

> is there a ruby interface to ImageMagicks
> or to the SDL or GDL libraries?
> 

RUDL and ruby/sdl are bindings to SDL.
rmagick for ImageMagick
I think GDL means the GD library for graphs/images, there are bindings 
for that, too.
Looking on RAA (raa.ruby-lang.org ) should provide you links to get 'em