Lower triangle of a tensor.
Return a copy of a tensor with elements above the k-th diagonal zeroed.
m (array_like, shape (M, N)) – Input tensor.
k (int, optional) – Diagonal above which to zero elements. k = 0 (the default) is the
main diagonal, k < 0 is below it and k > 0 is above.
gpu (bool, optional) – Allocate the tensor on GPU if True, None as default
tril – Lower triangle of m, of same shape and data-type as m.
Tensor, shape (M, N)
same thing, only for the upper triangle
>>> import mars.tensor as mt
>>> mt.tril([[1,2,3],[4,5,6],[7,8,9],[10,11,12]], -1).execute()
array([[ 0, 0, 0],
[ 4, 0, 0],
[ 7, 8, 0],
[10, 11, 12]])