[Numpy-discussion] Fwd: np.unique for one bi-dimensional array
Giuseppe Amatulli
giuseppe.amatulli at gmail.com
Wed Jul 25 10:31:41 EDT 2012
Hi,
would like to identify unique pairs of numbers in two arrays o in one
bi-dimensional array, and count the observation
a_clean=array([4,4,5,4,4,4])
b_clean=array([3,5,4,4,3,4])
and obtain
(4,3,2)
(4,5,1)
(5,4,1)
(4,4,2)
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.
or
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
--
Giuseppe Amatulli
Web: www.spatial-ecology.net
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