This script combines 6 Moving Averages (MAs) with 3 Donchian Channel 78.6% and 21.4% intermediary level lines to perform trade analysis. The 6 MAs (I, II, III , IV, V and VI ) default lengths come from one of the Fibonacci Phi^3 and Phi^3/2 sub series (17, 34, 72, 144, 305 and 610), but can be changed to any values, particularly to the traditionally used 20, 40, 50, 100, 200 and 300. Up to my knowledge, Fibonacci Phi^3 and Phi^3/2 sub series lengths were first proposed by Bo Williams.
The used Moving Averages can be chosen between EMA and MyMA. MyMA is a Moving Average that tries to mimic Bo William's MIMA. Due to the close resemblance between MyMA and MIMA, I do not feel comfortable to open this script source code. In order to learn how this script operates with EMAs, please refer to my Custom EMA + Fibo indicator that has its source code open.
The 3 Donchian Channels used have default lengths 72, 305 and 1292, calculated after the first length default value of 72. For each of the 3 Donchian Channels only an upper line, set by default at 78.6%, is plotted in green and its complement, set to 21.4%, is plotted in red. When the closing price is above 3 green lines, we say it is Forbidden to Sell ( PV ), and when the closing price is below 3 red lines, we say it is Forbidden to Buy ( PC ). Those conditions are flagged on the chart. These PV-PC conditions were, up to my knowledge, first proposed by Bo Williams.
This script also includes optional plot of the Giant MAs to help detecting old Resistance and Support lines when the price seems to be doing new historical highs and lows, respectively. These Giant lines have length greater than 1000.
This script also include the indication of the MA Fans. Those fans are formed when 6 Phi^3/2 distant MAs are ordered, for instance, we say there is EMA Fan 610 if close > EMA 17 > EMA 34 > EMA 72 > EMA 144 > EMA 305 > EMA 610. As far as I know, this concept of EMA Fan was first proposed by Bo Williams.