smooth

The SMOOTH function implements a method known as (3RSR)2H twice to do a running median averaging.

The SMOOTH function implements a method known as (3RSR)2H twice (see Reference) to do a running median averaging. For the sake of convient programming, SMOOTH calls 3 smaller functions:

R3R: to implement repeated running median
SR: to implement splitting 2-wide peaks and valleys
H: to implement hanning

These are helper functions, and should not be run directly.

Ref: J.W. Tukey, EXPLORATORY DATA ANALYSIS.
Addison-Wesley Publishing Co. 1977. Chapter 7, 16.