I've tried to create a numpy matrix of 3-D, but got the error: TypeError: Field elements must b-CodePudding

import numpy as np a = np.matrix([11,25,40], [5,34,98], [32,12,60])

PS: Also reviewed the similar question asked but the array was not complete there. Please guide what to do here?enter image description here

CodePudding user response：

You have to wrap the lists into a main list. the matrix constructor accepts a single iterable:

a = np.matrix([[11,25,40], [5,34,98], [32,12,60]])

output:

matrix([[11, 25, 40],
        [ 5, 34, 98],
        [32, 12, 60]])

NB. note that the use of matrix is no longer recommended (see docs, you should use numpy.array instead