ValueError: all the input arrays must have same number of dimensions

Question

I\'m having a problem with np.append.

I\'m trying to duplicate the last column of 20x361 matrix n_list_converted by using the code below:

Answer 1

You can also cast (n,) to (n,1) by enclosing within brackets [ ].

e.g. Instead of np.append(b,a,axis=0) use np.append(b,[a],axis=0)

a=[1,2]
b=[[5,6],[7,8]]
np.append(b,[a],axis=0)

returns

array([[5, 6],
       [7, 8],
       [1, 2]])