DrakonianD DrakonianD - 1 year ago 70
Python Question

How to Print a specific column in a 3D Matrix using numpy Python

I have a problem with printing a column in a numpy 3D Matrix.
Here is a simplified version of the problem:

import numpy as np
Matrix = np.zeros(((10,9,3))) # Creates a 10 x 9 x 3 3D matrix
Matrix[2][2][6] = 578
# I want to print Matrix[2][x][6] for x in range(9)
# the purpose of this is that I want to get all the Values in Matrix[2][x][6]

Much appreciated if you guys can help me out.
Thanks in advance.

Answer Source

Not sure if Numpy supports this, but you can do it with normal lists this way:

If you have three lists a = [1,2,3], b = [4,5,6], and c = [7,8,9], you can get the second dimension [2,5,8] for example by doing



Turns out this is pretty simple in Numpy. According to this thread you can just do: