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Miha Kralj
2026-03-13 13:47:10 -07:00
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lib/dynamics/chop/Chop.md
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| **PineScript** | [chop.pine](chop.pine) |
- The Choppiness Index is a non-directional regime indicator that measures whether the market is trending or trading sideways.
- Parameterized by `period` (default 14).
- Output range: Varies (see docs).
- Requires `period` bars of warmup before first valid output (IsHot = true).
- **Similar:** [ADX](../adx/Adx.md), [VHF](../vhf/Vhf.md) | **Complementary:** BBands for range boundaries | **Trading note:** Choppiness Index; high values = choppy/ranging, low values = trending. Range 0–100.
- Validated against TA-Lib, Skender, and Tulip reference implementations where available.
The Choppiness Index is a non-directional regime indicator that measures whether the market is trending or trading sideways. It compares total price movement (sum of True Range) to net price movement (high-low channel width) using a logarithmic ratio, producing a bounded value where high readings indicate choppy/consolidating conditions and low readings indicate trending conditions. CHOP does not indicate direction — only whether directional strategies are likely to succeed. The logarithmic scaling normalizes the output to approximately 0-100 regardless of price level or volatility magnitude.
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## Resources
- Dreiss, E.W. — Choppiness Index (original development)
- PineScript reference: `chop.pine` in indicator directory
- PineScript reference: `chop.pine` in indicator directory