CODEWITHSUNDEEP
python-3.6
maze_p
maze_p

Reputation: 21

Problems with matrix dimension - Python

I am trying to get matrix T in python and don't know what my mistake is. This is my code: 

c=dx/L  
s=dy/L  
cc=c**2     
ss=s**2     
cs=c*s  
T = np.matrix( ((cc, cs,-cc,-cs),                   
                (cs, ss,-cs,-ss),                   
                (-cc,-cs, cc, cs),
                (-cs,-ss, cs, ss))

The values that are given are dx, dy and L. If I want to run the script it just says: 

"..../miniconda3/envs/myenv/lib/python3.6/site-packages/numpy/matrixlib/defmatrix.py", line 240, in __new__
    raise ValueError("matrix must be 2-dimensional")
ValueError: matrix must be 2-dimensional

Can anyone of you help me? I have no idea why the matrix should not be 2-dimensional. Thanks

Upvotes: 2

Views: 72

Answers (1)

pobu
pobu

Reputation: 402

Try to make T as an array:

T = np.array( ((cc, cs,-cc,-cs), 
              (cs, ss,-cs,-ss),
              (-cc,-cs, cc, cs),
              (-cs,-ss, cs, ss)) )

Matrixes in numpy module are only 2-dimensional, but arrays are N-dimensional.

Upvotes: 1

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