kingchenc
c096943bdf
Completes expansion-roadmap block **A2 — Market Breadth**: the 14 indicators that remained after the `AdvanceDecline` bootstrap, all built on the existing `CrossSection` input. ## Indicators (all scalar `Indicator<Input = CrossSection, Output = f64>`) | Indicator | Reading | |-----------|---------| | `AdvanceDeclineRatio` | advancers / decliners | | `AdVolumeLine` | cumulative net advancing volume | | `McClellanOscillator` | 19/39 EMAs of ratio-adjusted net advances | | `McClellanSummationIndex` | running total of the oscillator | | `Trin` (Arms Index) | A/D ratio over up/down volume ratio | | `BreadthThrust` (Zweig) | SMA of the advancing-issues share | | `NewHighsNewLows` | new highs − new lows | | `HighLowIndex` | SMA of the record-high percent | | `PercentAboveMa` | % of the universe above its MA | | `UpDownVolumeRatio` | advancing / declining volume | | `BullishPercentIndex` | % on a point-and-figure buy signal | | `CumulativeVolumeIndex` | volume-normalised cumulative net advancing volume | | `AbsoluteBreadthIndex` | \|advancers − decliners\| | | `TickIndex` | instantaneous net advancers − decliners | ## Input model `AdVolumeLine` and `CumulativeVolumeIndex` are kept distinct (the latter normalises each tick's net advancing volume by total volume, so it stays comparable across volume regimes). `PercentAboveMa` and `BullishPercentIndex` need a per-symbol state signal that `Member` did not carry, so `Member` gains two additive flags (`above_ma`, `on_buy_signal`) via a new `Member::with_signals` constructor; the 4-arg `Member::new` leaves both cleared, so every existing caller and binding is unchanged. `CrossSection` gains volume / new-extreme / state aggregation helpers. ## Wiring Fully wired across the Rust core, the python/node/wasm bindings, the cross-section fuzz target, the README + docs indicator counters (325 → 339), and dedicated python/node streaming-vs-batch tests. `fmt` / `test --workspace --all-features` / `clippy --workspace -D warnings` / node build+test / pytest all green locally.
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Documentation
Wickra's full documentation lives at docs.wickra.org.
That includes:
- Quickstarts for Rust, Python, Node, and WASM.
- A per-indicator deep dive for every one of the 339 indicators across the sixteen families (Moving Averages, Momentum Oscillators, Trend & Directional, Price Oscillators, Volatility & Bands, Bands & Channels, Trailing Stops, Volume, Price Statistics, Ehlers / Cycle DSP, Pivots & S/R, DeMark, Ichimoku & Charts, Candlestick Patterns, Market Profile, Risk / Performance) — see the indicators overview.
- Reference pages: warmup periods, streaming vs batch, indicator chaining, and the data layer.
- Guides: Cookbook, TA-Lib migration, FAQ.
Editing the docs
The documentation site is a separate git repository at
https://github.com/wickra-lib/wickra-docs. Open a pull request there to
propose changes; the site is built with VitePress and deploys to
docs.wickra.org.