nlcpy.triu

nlcpy.triu(m, k=0)[source]

Upper triangle of an array.

Returns a copy of a matrix with the elements below the k-th diagonal zeroed. Please refer to the documentation for tril for further details.

See also

tril: Lower triangle of an array.

Examples

>>> import nlcpy as vp
>>> vp.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]])