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Category
Indicator Functions
Description
Wilder's relative strength index
Syntax
RSI(len)
Parameters
len - lookback period
Notes
Calculation uses the original Welles Wilder formula. Wilder's exponential smoothing is equivalent to using 2*len-1 in a regular exponential moving average.
It's a little-known fact RSI(len) crossing above or below 50 is the same as C crossing above or below EMA(C,2*len-1).
This indicator supports ultra-fast one-pass calculation when used in the Data Section with a non-variable length.
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