lisa.datautils.series_derivate#

lisa.datautils.series_derivate(y, x=None, order=1)[source]#

Compute a derivative of a pandas.Series with respect to another series.

Returns:

A series of dy/dx, where x is either the index of y or another series.

Parameters:

y (pandas.DataFrame) – Series with the data to derivate.
x (pandas.DataFrame or None) – Series with the x data. If None, the index of y will be used. Note that y and x are expected to have the same index.
order (int) – Order of the derivative (1 is speed, 2 is acceleration etc).