This is the port of another great Waddah Attar's indicator.
The original indicator can be found here: http://codebase.mql4.com/1000
The green bars shows the strength of the up trend.
The red bars shows the strength of the down trend.
The trend lines are calculates as difference b/w the current and the previous values EMA(20) - EMA(40) (the MACD line).
Brown line shows dynamics of volatility.
Brown line is a distance between 20 periods Bollinger's bands with factor 2.
The recommendation is to buy when up trend becomes stronger and volatility increases.
The recommendation is to sell when down trend becomes stronger and volatility increases.
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See also the signal based on this indicator.
The indicator was revised and updated