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torch.count_nonzero#

torch.count_nonzero(input,dim=None)→Tensor#

Counts the number of non-zero values in the tensorinput along the givendim.If no dim is specified then all non-zeros in the tensor are counted.

Parameters

  • input (Tensor) – the input tensor.

  • dim (int ortuple ofints,optional) – Dim or tuple of dims along which to count non-zeros.

Example:

>>>x=torch.zeros(3,3)>>>x[torch.randn(3,3)>0.5]=1>>>xtensor([[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])