[Numpy-discussion] read-only or immutable masked array
gregorio.bastardo at gmail.com
Mon Jul 15 12:41:17 EDT 2013
> Quick workaround: use `x.harden_mask()` *then* `x.mask.flags.writeable=False`
Thanks for the update and the detailed explanation. I'll try this trick.
> This may change in the future, depending on a yet-to-be-achieved consensus on the definition of 'least-surprising behaviour'. Right now, the *-like functions return an array that shares the mask with the input, as you've noticed. Some people complained about it, what's your take on that?
I already took part in the survey (possibly out of thread):
> You were not missing anything, np.ma isn't the most straightforward module: plenty of corner cases, and the implementation is pretty naive at times (but hey, it works). My only advice is to never lose hope.
I agree there are plenty of hard-to-define cases, and I came accross a
hot debate on missing data representation in python:
but still I believe np.ma is very usable when compression is not
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