How to combine 2 numpy.ndarray in numpy

Question

I have the following 2 arrays:

k=arange(1,100)
m=arange(1,100)

Then how to append or combine them into an array with 2 columns and 99 rows?

Miikka · Accepted Answer · 2012-12-08 12:22:27Z

6

vstack, hstack and transpose are your friends for things like this.

>>> vstack([k,m]).transpose()
array([[ 1,  1],
       [ 2,  2],
       [ 3,  3],
       ...
       [98, 98],
       [99, 99]])

answered Dec 8, 2012 at 12:22

Miikka

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1 Comment

Daniel Wu Over a year ago

Thanks for the answer, and one further question: if I have a list, each element of the list is an arrage like k, or m in the original question, then how to make them an arrange?

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