torch.atleast_2d

torch.atleast_2d(*tensors)

返回每个输入张量的二维视图（对于零维张量）。对于二维或更高维度的输入张量，则按原样返回。

参数

input (Tensor 或 list of Tensors) –

返回值

output (Tensor 或 Tensor 元组)

示例

>>> x = torch.tensor(1.)
>>> x
tensor(1.)
>>> torch.atleast_2d(x)
tensor([[1.]])
>>> x = torch.arange(4).view(2, 2)
>>> x
tensor([[0, 1],
        [2, 3]])
>>> torch.atleast_2d(x)
tensor([[0, 1],
        [2, 3]])
>>> x = torch.tensor(0.5)
>>> y = torch.tensor(1.)
>>> torch.atleast_2d((x, y))
(tensor([[0.5000]]), tensor([[1.]]))