WrightTools.kit.diff

WrightTools.kit.diff(xi, yi, order=1) → numpy.ndarray[source]

Take the numerical derivative of a 1D array.

Output is mapped onto the original coordinates using linear interpolation. Expects monotonic xi values.

Parameters:
  • xi (1D array-like) – Coordinates.
  • yi (1D array-like) – Values.
  • order (positive integer (optional)) – Order of differentiation.
Returns:

Numerical derivative. Has the same shape as the input arrays.
Return type:

1D numpy array