Re: no data exclution and unique combination.

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From	Terry Reedy <tjreedy@udel.edu>
Subject	Re: no data exclution and unique combination.
Date	Tue, 24 Jul 2012 15:32:07 -0400
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On 7/24/2012 2:27 PM, giuseppe.amatulli@gmail.com wrote:
> Hi,
> would like to take eliminate a specific number in an array and its correspondent in an other array, and vice-versa.
>
> given
>
> a=np.array([1,2,4,4,5,4,1,4,1,1,2,4])
> b=np.array([1,2,3,5,4,4,1,3,2,1,3,4])
>
> no_data_a=1
> no_data_b=2
>
> a_clean=array([4,4,5,4,4,4])
> b_clean=array([3,5,4,4,3,4])

As I discovered when running the solution before, your test data are 
wrong, leaving out 2,3 before the last pair (4,4). Anyway, for those 
interested in a plain Python solution, without numpy:

a=[1,2,4,4,5,4,1,4,1,1,2,4]
b=[1,2,3,5,4,4,1,3,2,1,3,4]

no_data_a=1
no_data_b=2

a_clean=(4,4,5,4,4,2,4)
b_clean=(3,5,4,4,3,3,4)

cleaned = list(zip(*(pair for pair in zip(a,b)
     if pair[0] != no_data_a and pair[1] != no_data_b)))
print(cleaned, cleaned == [a_clean, b_clean])
#
[(4, 4, 5, 4, 4, 2, 4), (3, 5, 4, 4, 3, 3, 4)] True


-- 
Terry Jan Reedy

Thread

no data exclution and unique combination. giuseppe.amatulli@gmail.com - 2012-07-24 11:27 -0700
  Re: no data exclution and unique combination. MRAB <python@mrabarnett.plus.com> - 2012-07-24 19:51 +0100
  Re: no data exclution and unique combination. MRAB <python@mrabarnett.plus.com> - 2012-07-24 20:08 +0100
  Re: no data exclution and unique combination. Terry Reedy <tjreedy@udel.edu> - 2012-07-24 15:32 -0400
  Re: no data exclution and unique combination. giuseppe.amatulli@gmail.com - 2012-08-09 13:06 -0700
    Re: no data exclution and unique combination. Dave Angel <d@davea.name> - 2012-08-09 17:23 -0400
    Re: no data exclution and unique combination. Terry Reedy <tjreedy@udel.edu> - 2012-08-09 17:33 -0400
      Re: no data exclution and unique combination. Hans Mulder <hansmu@xs4all.nl> - 2012-08-10 10:47 +0200

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