Formulas:
Low[i]=Open[MinPos]-Open[i],
High[i]=Open[i]-Open[MaxPos], where
MinPos is a position of minimum Low price in range from (i-Period) to (i),
MaxPos is a position of maximum High price in range from (i-Period) to (i).
Also oscillator have a 2 signal line (EMA with [SignalPeriod]).
Download:
The indicator was revised and updated