Input ndarray
The first axis of the sub-arrays of interest. Ignored when the input is a 1-D array.
The second axis of the sub-arrays of interest. Ignored when the input is a 1-D array.
Diagonal in question. The default is 0. Use k>0 for diagonals above the main diagonal, and k<0 for diagonals below the main diagonal. If input has shape (S0 S1) k must be between -S0 and S1
This Param Object is specifically used for diag