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docs: standardize .md template — add PineScript links, blockquotes, bullet summaries

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- Eeo.md: full rewrite to canonical template (blockquote, table, 3 bullets, paragraph)
- Ac.md: add PineScript row
- Ao.md: add PineScript row
- Fisher04.md: add table, PineScript row, 3 bullets, paragraph
- TtmWave.md: add PineScript row
- Dstoch.md: full rewrite header (blockquote, canonical table, 3 bullets, paragraph)
- Net.md: add blockquote, canonical table, PineScript row, 3 bullets, paragraph
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Miha Kralj
2026-03-17 15:31:58 -07:00
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lib/oscillators/fisher04/Fisher04.md
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> *The Fisher Transform provides clear, unambiguous turning points that make it possible to identify trend reversals.*
## Introduction
| Property | Value |
| ---------------- | -------------------------------- |
| **Category** | Oscillator |
| **Inputs** | Source (close) |
| **Parameters** | `period` (default 9) |
| **Outputs** | Single series (Fisher04) |
| **Output range** | Unbounded (typically ±3) |
| **Warmup** | `period` bars |
| **PineScript** | [fisher04.pine](fisher04.pine) |
The Fisher04 indicator implements the revised Fisher Transform from Chapter 1 of Ehlers' 2004 book *Cybernetic Analysis for Stocks and Futures*. It converts price data into a Gaussian normal distribution using the inverse hyperbolic tangent (arctanh), producing sharp turning-point signals. This 2004 revision uses wider normalization bandwidth, gentler IIR smoothing, and a reduced arctanh multiplier compared to the original 2002 TASC article, resulting in a smoother oscillator with less noise.
- Fisher04 implements the revised Fisher Transform from Ehlers' 2004 *Cybernetic Analysis for Stocks and Futures*, converting price data to a Gaussian distribution via arctanh with wider normalization and gentler IIR smoothing than the original 2002 article.
- **Similar:** [Fisher](../fisher/Fisher.md), [RRSI](../rrsi/Rrsi.md) | **Complementary:** Moving averages for trend confirmation | **Trading note:** Unbounded oscillator; values beyond ±2 indicate extremes. Uses 2004 coefficients (1.0 normalization, 0.5 IIR, 0.25 arctanh multiplier) — distinct from the 2002 version.
- No external validation libraries implement the 2004 Fisher variant. Validated through self-consistency and behavioral testing.
Fisher04 uses wider normalization bandwidth, gentler IIR smoothing (0.5 vs 0.67 feedback), and a halved arctanh multiplier (0.25 vs 0.5) compared to the original 2002 TASC formulation. The result is a smoother oscillator with less noise while retaining the sharp turning-point characteristics of the Fisher Transform.
## Historical Context