python pandas: how to calculate derivative/gradient

Question

Given that I have the following two vectors:

In [99]: time_index
Out[99]: 
[1484942413,
 1484942712,
 1484943012,
 1484943312,
 1484943612,
 1484943912,
 1484944         


        

Answer 1

As there is no builtin derivative method in Pandas Series / DataFrame you can use https://github.com/scls19fr/pandas-helper-calc.

It will provide a new accessor called calc to Pandas Series and DataFrames to calculate numerically derivative and integral.

So you will be able to simply do

recv.calc.derivative()

It's using diff() under the hood.