scipy.linalg.triu¶
- scipy.linalg.triu(m, k=0)[source]¶
Make a copy of a matrix with elements below the k-th diagonal zeroed.
Parameters: m : array_like
Matrix whose elements to return
k : int, optional
Diagonal below which to zero elements. k == 0 is the main diagonal, k < 0 subdiagonal and k > 0 superdiagonal.
Returns: triu : ndarray
Return matrix with zeroed elements below the k-th diagonal and has same shape and type as m.
Examples
>>> from scipy.linalg import triu >>> triu([[1,2,3],[4,5,6],[7,8,9],[10,11,12]], -1) array([[ 1, 2, 3], [ 4, 5, 6], [ 0, 8, 9], [ 0, 0, 12]])