[Numpy-discussion] Applying logical operations along an axis of a boolean array?

Juan Nunez-Iglesias jni.soma at gmail.com
Mon Dec 18 06:23:51 EST 2017

Use “np.all” or “np.any”.

On 18 Dec 2017, 10:02 PM +1100, hanno_lists at gmx.net, wrote:
> Hi,
> is it possible, to apply a logical operation, such as AND or OR along a particular axis of a numpy array?
> Let's say I have an (n,m) array and I want to AND along the first axis, such that I get a (1,m) (or just (m,) dimensional array back. I looked at the documentation for np.logical_and and friends but couldn't find an axis keyword on the logical_xyz operations and nothing else seemed to fit.
> Thanks, and best regards,
> Hanno
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