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torch.view_as_complex

torch.view_as_complex(input) → Tensor

Returns a view of input as a complex tensor. For an input complex tensor of size m1,m2,,mi,2m1, m2, \dots, mi, 2 , this function returns a new complex tensor of size m1,m2,,mim1, m2, \dots, mi where the last dimension of the input tensor is expected to represent the real and imaginary components of complex numbers.

Warning

view_as_complex() is only supported for tensors with torch.dtype torch.float64 and torch.float32. The input is expected to have the last dimension of size 2. In addition, the tensor must have a stride of 1 for its last dimension. The strides of all other dimensions must be even numbers.

Parameters

input (Tensor) – the input tensor.

Example::
>>> x=torch.randn(4, 2)
>>> x
tensor([[ 1.6116, -0.5772],
        [-1.4606, -0.9120],
        [ 0.0786, -1.7497],
        [-0.6561, -1.6623]])
>>> torch.view_as_complex(x)
tensor([(1.6116-0.5772j), (-1.4606-0.9120j), (0.0786-1.7497j), (-0.6561-1.6623j)])

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