This indicator was developed by Etienne Botes and Douglas Siepman. Indicator Vortex consists of two oscillators that display positive and negative trend movements, similar to lines +DI and -DI of indicator Average Directional Movement Index.
It has one input parameter:
- Period - indicator calculation period.
Calculation:
+VI = 100 * svip / satr, -VI = 100 * svim / satr
where:
svip = SMA(iVIP, Period) svim = SMA(iVIM, Period) satr = SMA(ATR, Period) iVIP = Abs(High - PrevLow) iVIM = Abs(Low - PrevHigh)
