Hi, I need the diagonal elements from result of multiplying matrix A, B together. I can get by multiplying the 2 matrices and then call MatGetDiagonal. However, I only need the values on the diagonal and the rest of the elements are useless for me. As the size of matrices increase, I am afraid it affect the performance.
So, I am looking for another method that only calculates the diagonal of multiplication and not the rest of elements. If there is not such a method for matrix, how can I use the vector's operations to reach the same results? Best, Ehsan
