Frequency detection documentation is confusing.

[TPolzer]

I just had a look at the frequency detection code to find out what its purpose is. Reading the documentation is not very enlightening: Detects if a points occurs multiple times within a defined time range

Reading the code, doesn't really help either:

• It takes multiple time series as arguments, but only looks at the first one.
• It uses the List<Long> currentWindow as a counter (just the size, contents irrelevant).
• It seems to subdivide a timeseries into chunks just smaller than windowSize minutes in duration and returns true if a chunk has at least windowThreshold more observations than its predecessor.

[FlorianLautenschlager]

I agree - the documentation at this point is poor...

The frequency detector splits a time series into windows, counts the data points, and checks if the delta between two consecutive windows is above a predefined threshold.

[FlorianLautenschlager]

Also see #42 and #60