"RangeIndicator" (Financial Indicator)
Sometimes abbreviated as RI.
Was developed by Jack Weinberg.
Is a statistical indicator.
Is computed using high, low, and close prices.
Returns one time series, a 10-period exponential moving average of the percentage of the true range in the overall range over 10 periods.
FinancialIndicator["RangeIndicator",n1,n2] uses n1 periods and an n2-period moving average.