So-called normal RSI uses EMA smoothing with period = 2*Length-1 (or Wilder's smoothing with period=Length).
I've developed RSI indicator with my algorithm of calculation.
Now you can use any values for length and any kinds of smoothing.
This is an MQL5 version of the Expert Advisor described in the article "How to reduce trader's risks" (https://www.mql5.com/en/articles/4233).Chandelier exit
Chandelier exit indicator is designed to keep traders in a trend and prevent an early exit as long as the trend extends. Typically, the Chandelier Exit will be above prices during a downtrend and below prices during an uptrend.