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torch.count_nonzero
torch.count_nonzero(input, dim=None) → Tensor
-
Counts the number of non-zero values in the tensor
input
along the givendim
. If no dim is specified then all non-zeros in the tensor are counted.- Parameters
Example:
>>> x = torch.zeros(3,3) >>> x[torch.randn(3,3) > 0.5] = 1 >>> x tensor([[0., 1., 1.], [0., 0., 0.], [0., 0., 1.]]) >>> torch.count_nonzero(x) tensor(3) >>> torch.count_nonzero(x, dim=0) tensor([0, 1, 2])
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