Yes, RSI has historically had different implementations. Most of the differences are due to interpretation of Wilder's original writings, and to substitution of exponential average in place of simple moving averages, etc. If you really care, you have to look at the code itself. If you really care, then perhaps your system is overfitted and you should reconsider the whole thing! > -----Original Message----- > > I have been testing the rsiTA implementation of R and it > seems to differ > from the one I wrote and the one in wealthlab developer. It > seems that there > are discrepancies between the definition of RSI. > > when i do a X/Y diff they give completely different results > ...(not a linear > relation) > > How do we know all these functions dont have errors? > > > >