clawpack/clawutil — pull request #11 by rjleveque (2012-01-30 13:13:26+00:00)
Title: imagediff.py added to compare plots for regression testing

See the docstring for instructions. Includes pixelwise diff using imagemagick convert command.

For an example of output, see
http://faculty.washington.edu/rjl/misc/imagediffs/imagediff_dir/_ImageDiffIndex.html