4.6.2 Number of dimensions

 

 

The number of dimensions of an array is obtained with the function ndim or using the array attribute ndim:

ndim(A) # 2
A.ndim # 2

Note that the number of dimensions, given by the function ndim, of a tensor T (a vector, matrix, or higher-order tensor) is always equal to the length of its shape:

T = zeros((2,2,3)) # tensor of shape (2,2,3); three dimensions
ndim(T) # 3
len(shape(T)) # 3