Ultimate oscillator offered by Larry Williams is a weighted average of values of three stochastic indicators defined on a short, medium and long periods.
The length of periods is usually in the correlation 1:2:4 (doubling) or 1:2:3 (multiplicity). Periods should be chosen according to characteristics of a certain market. Recommended values are: 7-14-28 or 7-14-21.
Translated from Russian by MetaQuotes Software Corp.
Original code: https://www.mql5.com/ru/code/7063
The indicator Williams' Accumulation/Distribution, W_A/D is the accumulated sum of positive "accumulative" price movements and negative "distributive" ones.Volume Rate of Change - VROC
The indicator is equivalent of one of the oldest classical indicators, ROC. The prices are replaced with volumes in this present indicator.