[Numpy-discussion] masked arrays and nd_image
jmiller at stsci.edu
Wed Aug 11 06:25:11 EDT 2004
On Wed, 2004-08-11 at 08:53, Curzio Basso wrote:
> Hi all.
> I just tried to use a masked array with nd_image, namely to pass it to
> the convolve1d() function, and I got:
> error: getShape: couldn't get sequence length.
> Does someone know if it possible at all to use nd_image on masked
I don't believe it is possible to use masked arrays directly because
they are not NumArrays or NumArray subclasses. Masked arrays only
contain NumArrays which store the data and mask.
> Or if there is a possibility to do operations on masked images
> without using the ma module?
I think the key here may be the "filled()" method which lets you convert
a masked array into a NumArray with the masked values filled into some
fill value, say 0. I'm not sure what the post convolution mask value
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