OPEN-SOURCE SCRIPT
OTE Cycle Regime
Rest in Peace Veryfid.
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Cycle Regime (Ehlers Dominant Cycle)
Measures the market's dominant cycle length and flags whether it's compressing or expanding.
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**What it does**
Cycle Regime plots a single, clean estimate of the market's current **dominant cycle period** — how many bars one full up-down rhythm is currently taking — and classifies it against its own recent baseline into three states:
- 🟢 **Compression** — the cycle is shorter than usual; price is coiling / oscillating tightly.
- 🔴 **Expansion** — the cycle is longer than usual; swings are stretching out (often a trend maturing).
- ⚪ **Neutral** — the cycle is near its typical length; no strong reading.
The current state is shown as a colored line, an optional background tint during compression, and a status label reading e.g. `COMPRESSION · 23b (base 49)`.
**The math**
Under the hood this is John Ehlers' **homodyne (in-phase / quadrature) dominant-cycle measurement**. Price is detrended and smoothed, a quadrature (90°-shifted) copy is built via a Hilbert-transform approximation, and the per-bar phase advance between the two is converted into a cycle period ( period = 2π / phase-rate ), then median-filtered and smoothed for stability.
It is a distillation of the open-source **"Tesla Coil"** indicator: I kept only the single robust cycle estimator and replaced the original's fixed reference level with a self-scaling baseline (the rolling median of the period), so the regime adapts to any symbol or timeframe without manual tuning.
**How to read it**
- Watch the **color**, not just the level. A rising line into red = the market is trending/stretching. A falling line into green = it's compressing/coiling.
- The **baseline** (gray line) is the median cycle length over the lookback window — the line's own "normal." Regime is always relative to that, so a "compression" on a fast asset and a slow one mean the same thing structurally.
- It describes **rhythm and volatility state, not direction.** It never tells you up or down — pair it with your own structure, trend, or entry method.
**Settings**
- **Source** — price input (default close).
- **Baseline window** — bars used for the median baseline (default 40).
- **Expansion / Compression thresholds** — how far above/below baseline triggers each state (default 1.10× / 0.90×).
- **Colors, baseline visibility, background highlight** — all optional.
Alerts fire when the cycle enters compression or expansion.
**How I use it**
I treat cycle state as a **context filter**, not a signal. It's most useful applied on your higher timeframe to judge *when* your setups are worth taking versus when the market is in a state you'd rather avoid — a modifier on decisions your own method already made, not a standalone buy/sell.
**Credits**
Built on Ehlers' instantaneous-frequency / homodyne cycle work and distilled from the open-source "Tesla Coil" indicator by **veryfid** (with contributions by DasanC and KryptoBeau). Published open-source under MPL-2.0.
**Disclaimer**
For research and education only. This is not financial advice and makes no claim about future performance. Cycle measurements are inherently lagging and smoothed — always confirm with your own analysis and risk management.
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---
Cycle Regime (Ehlers Dominant Cycle)
Measures the market's dominant cycle length and flags whether it's compressing or expanding.
---
**What it does**
Cycle Regime plots a single, clean estimate of the market's current **dominant cycle period** — how many bars one full up-down rhythm is currently taking — and classifies it against its own recent baseline into three states:
- 🟢 **Compression** — the cycle is shorter than usual; price is coiling / oscillating tightly.
- 🔴 **Expansion** — the cycle is longer than usual; swings are stretching out (often a trend maturing).
- ⚪ **Neutral** — the cycle is near its typical length; no strong reading.
The current state is shown as a colored line, an optional background tint during compression, and a status label reading e.g. `COMPRESSION · 23b (base 49)`.
**The math**
Under the hood this is John Ehlers' **homodyne (in-phase / quadrature) dominant-cycle measurement**. Price is detrended and smoothed, a quadrature (90°-shifted) copy is built via a Hilbert-transform approximation, and the per-bar phase advance between the two is converted into a cycle period ( period = 2π / phase-rate ), then median-filtered and smoothed for stability.
It is a distillation of the open-source **"Tesla Coil"** indicator: I kept only the single robust cycle estimator and replaced the original's fixed reference level with a self-scaling baseline (the rolling median of the period), so the regime adapts to any symbol or timeframe without manual tuning.
**How to read it**
- Watch the **color**, not just the level. A rising line into red = the market is trending/stretching. A falling line into green = it's compressing/coiling.
- The **baseline** (gray line) is the median cycle length over the lookback window — the line's own "normal." Regime is always relative to that, so a "compression" on a fast asset and a slow one mean the same thing structurally.
- It describes **rhythm and volatility state, not direction.** It never tells you up or down — pair it with your own structure, trend, or entry method.
**Settings**
- **Source** — price input (default close).
- **Baseline window** — bars used for the median baseline (default 40).
- **Expansion / Compression thresholds** — how far above/below baseline triggers each state (default 1.10× / 0.90×).
- **Colors, baseline visibility, background highlight** — all optional.
Alerts fire when the cycle enters compression or expansion.
**How I use it**
I treat cycle state as a **context filter**, not a signal. It's most useful applied on your higher timeframe to judge *when* your setups are worth taking versus when the market is in a state you'd rather avoid — a modifier on decisions your own method already made, not a standalone buy/sell.
**Credits**
Built on Ehlers' instantaneous-frequency / homodyne cycle work and distilled from the open-source "Tesla Coil" indicator by **veryfid** (with contributions by DasanC and KryptoBeau). Published open-source under MPL-2.0.
**Disclaimer**
For research and education only. This is not financial advice and makes no claim about future performance. Cycle measurements are inherently lagging and smoothed — always confirm with your own analysis and risk management.
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Skrip sumber terbuka
Dalam semangat TradingView sebenar, pencipta skrip ini telah menjadikannya sumber terbuka, jadi pedagang boleh menilai dan mengesahkan kefungsiannya. Terima kasih kepada penulis! Walaupuan anda boleh menggunakan secara percuma, ingat bahawa penerbitan semula kod ini tertakluk kepada Peraturan Dalaman.
Penafian
Maklumat dan penerbitan adalah tidak bertujuan, dan tidak membentuk, nasihat atau cadangan kewangan, pelaburan, dagangan atau jenis lain yang diberikan atau disahkan oleh TradingView. Baca lebih dalam Terma Penggunaan.
Skrip sumber terbuka
Dalam semangat TradingView sebenar, pencipta skrip ini telah menjadikannya sumber terbuka, jadi pedagang boleh menilai dan mengesahkan kefungsiannya. Terima kasih kepada penulis! Walaupuan anda boleh menggunakan secara percuma, ingat bahawa penerbitan semula kod ini tertakluk kepada Peraturan Dalaman.
Penafian
Maklumat dan penerbitan adalah tidak bertujuan, dan tidak membentuk, nasihat atau cadangan kewangan, pelaburan, dagangan atau jenis lain yang diberikan atau disahkan oleh TradingView. Baca lebih dalam Terma Penggunaan.