Ehlers Inverse Fisher Transform of RSI or RSX

v10.3
Ehlers Inverse Fisher Transform of RSI or RSX

Published in the Technical Analysis of Stocks and Commodities magazine in the May 2004 issue, the inverse fisher transform is an indicator created by John Ehlers. The Inverse Fisher Transform was developed to help traders and investors with their timing decisions to buy and sell securities. It does this by altering the probability distribution function (PDF) of any indicator and makes it appear smoother.

This version include the inverse fisher transform calculation method applied on the RSI (upper oscillator in the screenshot) or the RSX (lower oscillator in the attached picture).

Settings explained:

  • RsiPeriod: Period of RSI or RSX oscillator
  • RsiMethod: 0=RSI 1=RSX
  • SmoothPeriod: Smoothing period applied on the oscillator with a linear weighted average
  • MinMaxPeriod: period of highest high / lowest low to calculate the dynamic overbough/oversold levels
  • LevelUp: percentage of the overbought upper level
  • LevelDown: percentage of the oversold lower level

 

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Risk disclosure:

No information on this site is investment advice or a solicitation to buy or sell any financial instrument. Past performance is not indicative of future results. Trading may expose you to risk of loss greater than your deposits and is only suitable for experienced investors who have sufficient financial means to bear such risk.

ProRealTime ITF files and other attachments : How to import ITF files into ProRealTime platform?

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  1. Bard • 214 days ago #

    Great job and thanks very much for posting this @nicolas.
    I’ve backtested both these RSI and the RSX’s 20 period, 20/80 cross overs/unders using the Kase Dev Stop as an Exit on the Daily £/Yen, FTSE and Dow (DJI) (between Aug. 2013 and Sept. 2018) and it appears that although the profits are less with the RSX (versus the RSI) it produces sensible drawdowns in the 25-30% range for the £/Yen and FTSE… but for some reason and despite using all the Dev Stops exits from 1 to 6 std deviations for the Dow, the Dow just isn’t profitable. It’s only ever profitable on the cross over of the mid line using Dev Stop 1.0 but that has a very high drawdown… which got me thinking about the probability of these bigger market moves as I noticed that your Ehler’s Rocket RSI code: https://www.prorealcode.com/prorealtime-indicators/rocketrsi-john-ehlers had scaled/bounded the oscillator’s output between +/-3 standard deviations. Can that be done here?

    If 3 std devs is -3/+3 = 0.999 then how would you denote a range output of between -6+6 std devs?

    I have looked at trying to modify this code here for the last hour without success, is it possible to do? This way gives us a different perspective to judge how large a specific market move has been and how likely and maybe it’ll give me some insight as to why this indicator works well on the £/Yen and FTSE but not the Dow?

    Cheers
    Bard

    • Nicolas • 213 days ago #

      So you want to bound this oscillator with a scale made of std devs but of price? not from the oscillator itself?

  2. Bebbo • 176 days ago #

    Grazie del prezioso contributo Nicolas,
    scusa la mia inesperienza, sono alle prime armi e sto imparando.

    Volevo farti una domanda sull’argomento e prendo a riferimento l’ “Inverse Fisher Transform applicato al RSI” (pagina 64, probacktest_c1504281788c.pdf).
    Ho fatto delle prove “daily” su EUR MXN ma i segnali (ingresso, uscita, long e short) sembrano che vengano ricalcolati a posteriori a seconda della data finale di simulazione.
    Non ho quindi dei segnali validi in tempo reale, tipo il sistema ZIG ZAG.
    Solo allontanandomi di qualche giorno dal segnale che appare sul grafico quest’ultimo si fissa su una data certa, quando ormai non serve più.
    Posso inviare un immagine se non sono stato chiaro.

    Grazie ancora della tua cortesia

    https://ibb.co/kcT8Xf

    • Nicolas • 176 days ago #

      To avoid recalculation, you should use the one from this post.

  3. Bebbo • 175 days ago #

    Ok Grazie Nicolas.

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