[Numpy-discussion] masked arrays and nd_image

Peter Verveer verveer at embl-heidelberg.de
Wed Aug 11 06:05:02 CDT 2004


I did not write nd_image with masked arrays in mind, I imagine it won't 
work for most functions. I am not planning to support masked arrays

. If you just want to mask out some of the results, apply the mask 
afterwards. If you actually want to deal with masked values in the 
convolution itself, you are out of luck  with the convolve1d function, 
it does not support that. In that case you could try to write your own, 
using the generic filter functions (see the  manual).

Cheers, Peter

On 11 Aug 2004, at 14:53, 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 
> arrays? Or if there is a possibility to do operations on masked images 
> without using the ma module?
>
> thanks. curzio
>
>
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