how to read elements of a column in an array do some computation and inset the value to new array in python code example
Example 1: code for dimensions in numpy
import numpy as np
arr = np.array([1, 2, 3, 4])
arr_2D = np.array([[1, 2, 3, 4, 5], [6, 7, 8, 9, 10]])
print(arr.ndim)
print(arr_2D.ndim)
Example 2: how to get the first few lines of an ndarray 3d
>>> import numpy as np
>>> v = np.array(np.arange(24)).reshape(2,3,4)
>>> v
array([[[ 0, 1, 2, 3],
[ 4, 5, 6, 7],
[ 8, 9, 10, 11]],
[[12, 13, 14, 15],
[16, 17, 18, 19],
[20, 21, 22, 23]]])
>>> v[:, 1, 3]
array([ 7, 19])