[Numpy-discussion] Fwd: np.unique for one bi-dimensional array
Wed Jul 25 09:50:48 CDT 2012
> would like to identify unique pairs of numbers in two arrays o in one
> bi-dimensional array, and count the observation
> and obtain
> I solved with tow loops but off course there will be a faster solution.
> I was checking also
> for np.unique but i did not find how to apply for a bi-dimensional array.
> Concatenate the two arrays
> a_concatenate=array([4_3,4_5,5_4,4_4,4_3,4_4]), then np.unique, then
> split again.
> Any other/faster solutions?
> In bash I usually unique command
> Thanks in advance
I'd try np.histogram2d, but probably only because I don't know np.unique.
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