CODEWITHSUNDEEP
pythonnumpyconcatenation
hardikudeshi
hardikudeshi

Reputation: 1491

'Concatenating' rows of a numpy matrix

I have a numpy matrix

1 2
3 4

I want to 'concatenate' the rows of the matrix to get a new matrix

13 24

Is there a simple way to do this?

Upvotes: 0

Views: 786

Answers (1)

DSM
DSM

Reputation: 353109

Looks to me more like you want to concatenate the columns. Maybe something like this would suffice?

In [25]: import numpy as np

In [26]: a = np.array([[1,2],[3,45]])

In [27]: a
Out[27]: 
array([[ 1,  2],
       [ 3, 45]])

In [28]: [''.join(str(x) for x in row) for row in a.T]
Out[28]: ['13', '245']

In [29]: np.array([''.join(str(x) for x in row) for row in a.T], int)
Out[29]: array([ 13, 245])

Upvotes: 1

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