Rails - Oct 2009 - mini_magick

I have setup ImageMagick and mini_magick.  Generally speaking, I''m
impressed.  The problem seems to be that, unless I''ve missed
something, there is not a lot of documentation detailing the use of
mini_magick.  I''ve figured out that one can create an image object
instance from a file with something like:

image=MiniMagick::Image.from_file(''path_to_file'')

and then work with it (e.g., image[:width]).

I''m wondering if there are other sources that I can use for creating
an image object.  For example, could I source my object across the net
with something like:

image=MiniMagick::Image.from_net(''url_to_image'')

Thanks for any input.

           ... doug