Relative Volatility Index

[Apprentice]

Relative Volatility Index was presented by Donald Dorsey in the June 1993 issue of Technical Analysis of Stocks and Commodities

Up Day U = STDEV else U =0;
Down Day D = STDEV else D =0;

RVI = 100 * MA of U /( MA of U+ MA of D)
Relative Volatility Index is similar to the Relative Strength Index (RSI), however it uses the standard deviation over the past 10 days rather than daily price change.

RVI.lua

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The indicator was revised and updated

[Apprentice]

Inertia was presented by Donald Dorsey in september 1995 issue of S&C magazine.
Inertia (RVI of High + RVI of Low ) /2
Positive Inertia
Inertia> 50
Negative Inertia
Inertia <50

Inertia.lua

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[Apprentice]

Indicator was revised and updated.