torch.atan2

torch.atan2(input: Tensor, other: Tensor, *, out: Optional[Tensor]) → Tensor

Element-wise arctangent of ${\text{input}}_i/{\text{other}}_i$ with consideration of the quadrant. Returns a new tensor with the signed angles in radians between vector $({\text{other}}_i,{\text{input}}_i)$ and vector $(1,0)$. (Note that ${\text{other}}_i$, the second parameter, is the x-coordinate, while ${\text{input}}_i$, the first parameter, is the y-coordinate.)

The shapes of input and other must be broadcastable.

Parameters

• input (Tensor) – the first input tensor

• other (Tensor) – the second input tensor

Keyword Arguments

out (Tensor, optional) – the output tensor.

Example:

>>> a = torch.randn(4)
>>> a
tensor([ 0.9041,  0.0196, -0.3108, -2.4423])
>>> torch.atan2(a, torch.randn(4))
tensor([ 0.9833,  0.0811, -1.9743, -1.4151])