Add a new column to numpy array

Numpy add new column

: import numpy as np
: N = 3
: A = np.eye(N)

: np.c_[ A, np.ones(N) ]              # add a column
array([[ 1.,  0.,  0.,  1.],
       [ 0.,  1.,  0.,  1.],
       [ 0.,  0.,  1.,  1.]])

Source: stackoverflow.com

Append a zeros column numpy

np.concatenate((np.zeros((3,3), dtype=int), arr), axis=1)
array([[0, 0, 0, 1, 2, 3],
       [0, 0, 0, 4, 5, 6],
       [0, 0, 0, 7, 8, 9]])

Source: stackoverflow.com

Add a new column to numpy array

import numpy as np
N = 10
a = np.random.rand(N,N)
b = np.zeros((N,N+1))
b[:,:-1] = a

Source: stackoverflow.com

Add column to existing numpy array

b = np.insert(a, insert_index, values=a[:,2], axis=1)

Source: stackoverflow.com

Numpy add one column

an_array = np.append(an_array, new_column, axis=1)

Source: kite.com

Similar codes

-1 vote118 views1 answer
ValueError: cannot reshape array of size 98292 into shape (16382,1,28) site:stackoverflow.com
Python
15 votes109 views5 answers
Check empty dataframe
Python
8 votes100 views3 answers
Python utf8
Python
2 votes110 views1 answer
List comprehension python 3 hackerrank solution
Python
2 votes103 views2 answers
Or operator django
Python
-1 vote109 views1 answer
Python how to import a module given a stringg
Python
0 vote113 views1 answer
How to pairwise permute in python
Python
0 vote110 views1 answer
Code converter C++ to python
Python
0 vote110 views1 answer
Python replace accented characters code
Python
0 vote111 views1 answer
Python get_loc not returning number
Python