pandas.DataFrame.rolling¶ - Bad Documentation
Many things are unclear at the docs of the pandas.DataFrame.rolling.

A couple of them are the following:
1) 
What is an offset?

2) 
What is the position of the current value at the window?

From what I see is that the current value (of your pandas series to be processed) is the last of the rolling window.  (This is not clear at all)

If you set center as True then it becomes the center value.


If I am not very clear then apologies but I cannot explain things that should have been clear at the docs.

