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feat(dynamics): add PlusDI, MinusDI, PlusDM, MinusDM indicators

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Complete thin Dx-composition wrapper indicators with full test coverage:

- PlusDi/MinusDi: Directional Indicator wrappers (DiPlus/DiMinus from Dx)
- PlusDm/MinusDm: Directional Movement wrappers (DmPlus/DmMinus from Dx)
- Individual validation tests per indicator directory (TALib, Skender, bounds)
- Combined unit tests (DiDm.Tests.cs) and validation tests (DiDm.Validation.Tests.cs)
- Quantower wrappers + tests for all 4 indicators
- PineScript v6 implementations with compensated RMA
- Normalized .md documentation for all indicators and categories
- 182 tests passing, 0 failures
This commit is contained in:
Miha Kralj
2026-03-11 20:21:52 -07:00
parent 56b86bebfb
commit 33d20f2a18
437 changed files with 4589 additions and 2792 deletions
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lib/oscillators/marketfi/Marketfi.md
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@@ -1,5 +1,7 @@
# MARKETFI: Market Facilitation Index
> *Price moves in an empty room; volume tells you how many people showed up.*
| Property | Value |
| ---------------- | -------------------------------- |
| **Category** | Oscillator |
@@ -16,8 +18,6 @@
- Requires `> 1` bars of warmup before first valid output (IsHot = true).
- Validated against TA-Lib, Skender, and Tulip reference implementations where available.
> "Price moves in an empty room; volume tells you how many people showed up."
The Market Facilitation Index answers a single question with arithmetic directness: how much price moved per unit of volume traded? One division. No lookback period. No smoothing. No parameter to debate. What you get is raw market efficiency — the price range a market delivers for each unit of liquidity consumed.
Bill Williams introduced BW MFI in *Trading Chaos* (1995) as part of his Profitunity trading system, alongside the Awesome Oscillator and Accelerator Oscillator. His central insight was that price and volume carry independent signals, and only their *combination* reveals whether a trend has genuine participation. A wide range bar on thin volume suggests ease of movement but not conviction. A narrow range bar on heavy volume suggests absorption — large players defending a level.