Relative Strength (RS) is a method of identifying stocks which are relatively stronger or weaker as compared the market as a whole or to a relevant benchmark.
To calculate the relative strength of a particular stock, divide the percentage change over some time period by the percentage change of a particular index over the same time period.
The value of RS Indicator oscillates around zero. If value of RS is above ZERO then security is outperforming the benchmark and if value of RS is below ZERO then security is outperforming the benchmark.
Here i have used two RS indicator lines in one indicator - Short Term RS (default value is 65) and Long Term RS (default value is 123).
I have set default benchmark index as Nifty 50 (NSE:NIFTY)