numpy arrays
Heli
hemla21 at gmail.com
Wed Mar 23 06:47:27 EDT 2016
On Wednesday, March 23, 2016 at 11:07:27 AM UTC+1, Heli wrote:
> Hi,
>
> I have a 2D numpy array like this:
>
> [[1,2,3,4],
> [1,2,3,4],
> [1,2,3,4]
> [1,2,3,4]]
>
> Is there any fast way to convert this array to
>
> [[1,1,1,1],
> [2,2,2,2]
> [3,3,3,3]
> [4,4,4,4]]
>
> In general I would need to retrieve every nth element of the interior arrays in to single arrays. I know I can loop over and do this, but I have really big arrays and I need the fastest way to do this.
>
> Thanks for your help,
Thanks a lot everybody,
Transposing is exactly what I want. I just was not sure if that would work on internal arrays of a 2D array. Problem solved thanks everyone.
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