deriv_half

deriv_half(x, y, /, order=1, axis=0)

Return an arbitrary order finite difference approximation by taking successive half-level differences. This will change both the length of the data and the x coordinates of the data. While this is not always practical, it retains data resolution better than the centered methods.

Parameters

• x (float or array-like) – The step size, a 1-d coordinate vector, or an array of coordinates matching the shape of y.

• y (array-like) – The data.

• order (int, optional) – The order of the derivative. Default is 1.

axisint, optional

Axis along which derivative is taken.

dimstr, optional

For `xarray.DataArray` input only. Named dimension along which the derivative is taken.

Returns

• x (array-like) – The new x coordinates.

• diff (array-like) – The “derivative”.