Andrew Straw wrote:
>> may be the quickest and most general way to do it. I believe
>> ~np.isfinite is both more general and significantly faster than np.isnan.
>
> Clever, but it won't work as-is. np.isfinite('b') returns a
> NotImplementedType, and a default argument to scatter is c='b', which
> gets passed to this function. Anyhow, I implemented your idea with a
> check for NotImplementedType and some unit tests in r5791.
>
Andrew,
I think there were at least two problems with the delete_masked_points
function after you added the isfinite check, one of which was left over
from my earlier implementation, and one new one. I ended up rewriting
just about everything, including the unit tests and the docstring (which
is not in rst--sorry, maybe I can fix that later). Note that the
function is now in cbook.
I hope the combination of the code, the docstring and the unit tests
make the intended functionality clear, but it may all still be a bit
confusing. In any case, I think the new version does what is needed for
scatter, hexbin, and windbarb, and may turn out to be more generally useful.
As a side note, I suspect the check for NotImplementedType is not
robust; I can easily imagine isfinite being changed to raise an
exception instead. Therefore I did not use that check.
Eric
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