mars.tensor.flipud#
- mars.tensor.flipud(m)[源代码]#
Flip tensor in the up/down direction.
Flip the entries in each column in the up/down direction. Rows are preserved, but appear in a different order than before.
- 参数
m (array_like) – Input tensor.
- 返回
out – A view of m with the rows reversed. Since a view is returned, this operation is \(\mathcal O(1)\).
- 返回类型
array_like
参见
fliplr
Flip tensor in the left/right direction.
rot90
Rotate tensor counterclockwise.
提示
Equivalent to
m[::-1,...]
. Does not require the tensor to be two-dimensional.实际案例
>>> import mars.tensor as mt
>>> A = mt.diag([1.0, 2, 3]) >>> A.execute() array([[ 1., 0., 0.], [ 0., 2., 0.], [ 0., 0., 3.]]) >>> mt.flipud(A).execute() array([[ 0., 0., 3.], [ 0., 2., 0.], [ 1., 0., 0.]])
>>> A = mt.random.randn(2,3,5) >>> mt.all(mt.flipud(A) == A[::-1,...]).execute() True
>>> mt.flipud([1,2]).execute() array([2, 1])