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I broke imshow(<signed integer array>) :-( #6825
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- added this to the milestone on Jul 24, 2016
@anntzer, it looks like a more general solution to these problems is needed, starting with input normalization: float128 should be converted to float64 as early as possible, float32 should be preserved and used when possible, etc. Maybe the thing to do is revert #6700, and develop a more comprehensive solution, which need not block 2.0. Does this make sense to you? And if so, can you lead it?
Sure, I'll give it a try. Continuing the discussion in that thread.
- added a commit that references this issue on Aug 1, 2016
mpl2.0b3
and a fully black image appears.
Pretty sure this is due to #6700 and can be fixed by restoring the casts of vmin and vmax to a floating type. However that type should be determined as in process_value (i.e., np.float32 if dtype.itemsize <= 2 else np.promote_types(dtype, float) -- see the issue for the discussion).
Not making a PR yet because this (as well as the original #6700) may or may not affect the other Normalize classes too? Perhaps that's something that should be factored out.