Matrix of the diagonal sobel operator of size 3x3 [closed]

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What is the matrix of sobel operator of size 3x3 if the operator is said to be diagonal (Left or right diagonal)? EDIT: or may be with more bigger size

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The 3x3 diagonal Sobel operators are:

[[0,1,2],
 [-1,0,1],
 [-2,-1,0]]

and

[[-2,-1,0],
 [-1,0,1],
 [0,1,2]]

Hope it helps.