It is NRTR indicator, in which candlesticks are painted in accordance with the mutual positions of Alligator lines.
Center of Gravity is an oscillator developed by John F. Ehlers and presented in his article in Stocks & Commodities magazine (May 2002).
Spearman's Rank Correlation is a non-parametric method used in order to make statistical studies of relations between phenomena. In this case, the factual degree of parallelism between two numeric sequences will be detected.
There are many algorithms of smoothing. This given indicator is for smoothing of standard indicator ADX. The code was translated from Easy Language.