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

6 votes169 views2 answers
Python change working directory to file directory
Python
4 votes168 views2 answers
List to json python
Python
0 vote121 views0 answer
Python
15 votes179 views3 answers
Divide list into equal parts python
Python
11 votes180 views4 answers
How to make a qr code generator in python
Python
41 votes181 views4 answers
Find out current datetime in python
Python
1 vote169 views1 answer
How to open sound file in python
Python
8 votes175 views2 answers
How to detect mouse click in pygame
Python
1 vote170 views1 answer
How many data types are specified to numeric values in python
Python
21 votes203 views5 answers
No module named cv2
Python