OPEN-SOURCE SCRIPT
HARSI Fisher Transform & Divergence
# HARSI Fisher Transform & Divergence — Publication Description
## Description
This indicator runs a Heikin-Ashi RSI (HARSI) based oscillator through a
single-pole Fisher Transform filter to produce a cleaner, lower-lag turning/
momentum line. HARSI candles are plotted on the same visual scale as the
Fisher line (auto-scaled to volatility), so you can read both the raw HARSI
candles and the smoothed Fisher line in a single pane.
The indicator includes two independent divergence engines — one running on
the Fisher line, the other on the raw HARSI candles. Both engines compare
against real price highs/lows to detect regular (reversal) and hidden
(continuation) bullish/bearish divergence, with an optional maximum
pivot-distance filter and a separate alert condition for every signal type.
## Source Code & Credits
- **HARSI (Heikin-Ashi RSI) calculation** (`f_zrsi`, `f_rsiHeikinAshi`
functions): based on **JayRogers'** open-source **"Heikin Ashi RSI
Oscillator"** (Pine v4) script, ported to Pine v6 for this indicator. See
the original author's TradingView profile for the source script.
- **Fisher Transform concept**: developed by John Ehlers and considered
public domain; this script contains its own continuous, single-pole
implementation of the technique.
## Original Contributions Added In This Version
Beyond the underlying HARSI calculation, the following parts are original
to this script and constitute a significant improvement:
- A continuous single-pole Fisher Transform layer applied to HARSI HL2
- A dual divergence engine running **separately** on the Fisher line and on
the HARSI candle (regular + hidden, bullish + bearish — 8 signal types
total)
- An optional maximum pivot-distance filter to discard stale pivot pairs
and reduce false signals
- Auto-scaling of the HARSI candle body to share the Fisher line's pane
(a `ta.stdev`-based ratio, floored/capped against sudden spikes)
- A dedicated `alertcondition` for every signal type
- Pine v4 → v6 port and general code cleanup
These additions go beyond a minor style or naming change to the HARSI base —
they add an independent layer that extends the indicator's function and
purpose.
## Open-Source Note
This script is **open-source**; because it builds on JayRogers' original
open-source HARSI logic, it is published as open-source rather than
protected/invite-only.
## How to Use
Settings are organized into four groups: HARSI candle settings, Fisher
Transform settings, divergence settings, and display settings. Defaults are
suitable for general use; the pivot left/right bar counts and maximum pivot
distance can be adjusted to tune signal frequency and lag.
*This indicator is for educational and analytical purposes only and does
not constitute investment advice.*
## Description
This indicator runs a Heikin-Ashi RSI (HARSI) based oscillator through a
single-pole Fisher Transform filter to produce a cleaner, lower-lag turning/
momentum line. HARSI candles are plotted on the same visual scale as the
Fisher line (auto-scaled to volatility), so you can read both the raw HARSI
candles and the smoothed Fisher line in a single pane.
The indicator includes two independent divergence engines — one running on
the Fisher line, the other on the raw HARSI candles. Both engines compare
against real price highs/lows to detect regular (reversal) and hidden
(continuation) bullish/bearish divergence, with an optional maximum
pivot-distance filter and a separate alert condition for every signal type.
## Source Code & Credits
- **HARSI (Heikin-Ashi RSI) calculation** (`f_zrsi`, `f_rsiHeikinAshi`
functions): based on **JayRogers'** open-source **"Heikin Ashi RSI
Oscillator"** (Pine v4) script, ported to Pine v6 for this indicator. See
the original author's TradingView profile for the source script.
- **Fisher Transform concept**: developed by John Ehlers and considered
public domain; this script contains its own continuous, single-pole
implementation of the technique.
## Original Contributions Added In This Version
Beyond the underlying HARSI calculation, the following parts are original
to this script and constitute a significant improvement:
- A continuous single-pole Fisher Transform layer applied to HARSI HL2
- A dual divergence engine running **separately** on the Fisher line and on
the HARSI candle (regular + hidden, bullish + bearish — 8 signal types
total)
- An optional maximum pivot-distance filter to discard stale pivot pairs
and reduce false signals
- Auto-scaling of the HARSI candle body to share the Fisher line's pane
(a `ta.stdev`-based ratio, floored/capped against sudden spikes)
- A dedicated `alertcondition` for every signal type
- Pine v4 → v6 port and general code cleanup
These additions go beyond a minor style or naming change to the HARSI base —
they add an independent layer that extends the indicator's function and
purpose.
## Open-Source Note
This script is **open-source**; because it builds on JayRogers' original
open-source HARSI logic, it is published as open-source rather than
protected/invite-only.
## How to Use
Settings are organized into four groups: HARSI candle settings, Fisher
Transform settings, divergence settings, and display settings. Defaults are
suitable for general use; the pivot left/right bar counts and maximum pivot
distance can be adjusted to tune signal frequency and lag.
*This indicator is for educational and analytical purposes only and does
not constitute investment advice.*
Script de código aberto
Em verdadeiro espírito do TradingView, o criador deste script o tornou de código aberto, para que os traders possam revisar e verificar sua funcionalidade. Parabéns ao autor! Embora você possa usá-lo gratuitamente, lembre-se de que a republicação do código está sujeita às nossas Regras da Casa.
Aviso legal
As informações e publicações não se destinam a ser, e não constituem, conselhos ou recomendações financeiras, de investimento, comerciais ou de outro tipo fornecidos ou endossados pela TradingView. Leia mais nos Termos de Uso.
Script de código aberto
Em verdadeiro espírito do TradingView, o criador deste script o tornou de código aberto, para que os traders possam revisar e verificar sua funcionalidade. Parabéns ao autor! Embora você possa usá-lo gratuitamente, lembre-se de que a republicação do código está sujeita às nossas Regras da Casa.
Aviso legal
As informações e publicações não se destinam a ser, e não constituem, conselhos ou recomendações financeiras, de investimento, comerciais ou de outro tipo fornecidos ou endossados pela TradingView. Leia mais nos Termos de Uso.