scikits-image/scikits-image — pull request #269 by tonysyu (2012-08-25 16:15:27+00:00)
Title: Viewer: fix autodoc and nosetest failures

This is an ugly fix for autodoc and nosetest failures introduced by `skimage.viewer`. Since `PyQt4` is an optional dependency, we have to wrap lots of imports in `try`-`except` blocks.