[Numpy-discussion] recarray fun
Anne Archibald
peridot.faceted at gmail.com
Thu May 1 01:39:51 EDT 2008
2008/5/1 Travis E. Oliphant <oliphant at enthought.com>:
> Stéfan van der Walt wrote:
> > 2008/4/30 Christopher Barker <Chris.Barker at noaa.gov>:
> >
> >> Stéfan van der Walt wrote:
> >> > That's the way, or just rgba_image.view(numpy.int32).
> >>
> >> ah -- interestingly, I tried:
> >>
> >> rgba_image.view(dtype=numpy.int32)
> >>
> >> and got:
> >>
> >> Traceback (most recent call last):
> >> File "<stdin>", line 1, in <module>
> >> TypeError: view() takes no keyword arguments
> >>
> >> Since it is optional, shouldn't it be keyword argument?
> >>
> >
> > Thanks, fixed in r5115.
> >
> >
> This was too hasty. I had considered this before.
>
> The problem with this is that the object can be either a type object or
> a data-type object. You can use view to both re-cast a numpy array as
> another subtype or as another data-type.
>
> So, please revert the change until a better solution is posted.
If we're going to support keyword arguments, shouldn't those two
options be *different* keywords (dtype and ndarray_subclass, say)?
Then a single non-keyword argument tells numpy to guess which one you
wanted...
Anne
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