65  Periodic Indicators

There will be circular signals that can’t be neatly modelled using sine curves or splines. Out last chance to deal with this type of data is by writing custom indicators functions and applying.

This chapter is very similar in style to the Advanced Datetime Features chapter. With this chapter being the simpler case as we don’t have to deal with the added complexity that comes with datetime variables.

show the different shapes

show how we can turn this activation into a periodic/circular feature

65.2 Pros and Cons

65.2.1 Pros

65.2.2 Cons

65.3 R Examples

65.4 Python Examples