torch.movedim — PyTorch 2.7 documentation (original) (raw)

torch.movedim(input, source, destination) → Tensor¶

Moves the dimension(s) of input at the position(s) in sourceto the position(s) in destination.

Other dimensions of input that are not explicitly moved remain in their original order and appear at the positions not specified in destination.

Parameters

• input (Tensor) – the input tensor.
• source (int or tuple of ints) – Original positions of the dims to move. These must be unique.
• destination (int or tuple of ints) – Destination positions for each of the original dims. These must also be unique.

Examples:

t = torch.randn(3,2,1) t tensor([[[-0.3362], [-0.8437]],

    [[-0.9627],
    [ 0.1727]],

    [[ 0.5173],
    [-0.1398]]])

torch.movedim(t, 1, 0).shape torch.Size([2, 3, 1]) torch.movedim(t, 1, 0) tensor([[[-0.3362], [-0.9627], [ 0.5173]],

    [[-0.8437],
    [ 0.1727],
    [-0.1398]]])

torch.movedim(t, (1, 2), (0, 1)).shape torch.Size([2, 1, 3]) torch.movedim(t, (1, 2), (0, 1)) tensor([[[-0.3362, -0.9627, 0.5173]],

    [[-0.8437,  0.1727, -0.1398]]])