Slow Relative Strength Index was described in Stock&Commodities (July 2015).
It has six input parameters:
- Period – calculation period
- Smoothing – smoothing period
- Applied price
- Overbought – overbought level
- Middle level – middle level
- Oversold – oversold level
Calculation:
SRSI = 50.0 * (1.0+ChgRatio)
where:
ChgRatio =NetChgAvg / TotChgAvg
TotChgAvg = PrevTotChgAvg + SF * (Abs(Change) – PrevTotChgAvg)
NetChgAvg = PrevNetChgAvg + SF * (Change – PrevNetChgAvg)
Change= MA – PrevMA
SF = 1.0 / Period
MA – EMA(Applied price, Smoothing)
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