Converting Raw Accelerometer Data to Activity Counts Using Open-Source Code: Implementing a MATLAB Code in Python and R, and Comparing the Results to ActiLife, Brondeel, Ruben, Kestens Yan, Rahimipour Anaraki Javad, Stanley Kevin, Benoit Thierry, and Fuller Daniel , Journal for the Measurement of Physical Behaviour, 01 Sep. 2021, Volume 4, Issue 3, (2021)