kingchenc
04c3a83fdb
Close the "multi-timeframe" cell of the cross-language matrix for WASM. * examples/wasm/multi_timeframe.html — fetches the bundled 1-minute BTCUSDT CSV (or any 1-minute OHLCV CSV), rolls it up in-page to 5m, 15m, 1h, 4h and 1d buckets, and prints RSI(14), MACD(12,26,9) histogram and ADX(14) per timeframe via the WebAssembly bindings. Same inline-bucket aggregation as the Node sibling, same indicator set as the Python and Rust siblings — the Rust version uses `wickra-data::Resampler` directly which is currently a Rust-only API. The render is a single table (one row per timeframe) so the cross- language outputs sit side-by-side cleanly. The inline module script syntax-checks cleanly under `node --check`.
Wickra examples
Runnable examples for every Wickra binding. Rust and Node examples live next
to the code they exercise so the language tooling (cargo run --example,
node) can find them; the Python examples have no crate of their own and
live here under python/.
Rust — examples/rust/
The Rust examples live in the wickra-examples workspace member crate.
| Example | What it does | Run |
|---|---|---|
streaming.rs |
Feed a synthetic price series through SMA / EMA / RSI / MACD tick by tick. | cargo run -p wickra-examples --bin streaming |
backtest.rs |
Compute a basket of indicators over an OHLCV CSV and print a summary. | cargo run -p wickra-examples --bin backtest -- <ohlcv.csv> |
multi_timeframe.rs |
Resample a 1-minute CSV via wickra-data and print indicators per timeframe. | cargo run -p wickra-examples --bin multi_timeframe |
parallel_assets.rs |
Serial vs BatchExt::batch_parallel (rayon) over a synthetic panel, with speedup. |
cargo run --release -p wickra-examples --bin parallel_assets -- --assets 200 --bars 5000 |
fetch_btcusdt.rs |
Download real BTCUSDT klines from the Binance REST API into examples/data/. |
cargo run -p wickra-examples --bin fetch_btcusdt |
live_binance.rs |
Stream live Binance klines through an indicator over a resilient WebSocket. | cargo run -p wickra-examples --bin live_binance |
Python — examples/python/
| Example | What it does | Run |
|---|---|---|
streaming.py |
Feed a synthetic price series through SMA / EMA / RSI / MACD tick by tick. | python -m examples.python.streaming |
backtest.py |
Basket of indicators over an OHLCV CSV. | python -m examples.python.backtest <ohlcv.csv> |
live_trading.py |
Live Binance feed → RSI / MACD / Bollinger → signals. | python -m examples.python.live_trading --symbol BTCUSDT --interval 1m |
multi_timeframe.py |
Resample a 1-minute CSV to coarser timeframes and compare. | python -m examples.python.multi_timeframe <1m.csv> |
parallel_assets.py |
Process many symbols in parallel — the Rust extension releases the GIL during batch computation. | python -m examples.python.parallel_assets --assets 200 --bars 5000 |
fetch_btcusdt.py |
Download real BTCUSDT klines from the Binance REST API into examples/data/ (urllib + stdlib only). |
python -m examples.python.fetch_btcusdt |
live_trading.py additionally needs pip install websockets.
Node.js — examples/node/
Build the native binding once, then link it into the examples directory:
cd bindings/node && npm install && npx napi build --platform --release
cd ../../examples/node && npm install # links wickra + installs `ws`
| Example | What it does | Run |
|---|---|---|
streaming.js |
Feed a synthetic price series through several indicators tick by tick. | node streaming.js |
backtest.js |
Basket of indicators over an OHLCV CSV; defaults to the bundled BTCUSDT daily dataset. | node backtest.js [ohlcv.csv] |
multi_timeframe.js |
Roll a 1-minute CSV up to 5m / 15m / 1h / 4h / 1d and print indicators per timeframe. | node multi_timeframe.js [path/to/1m.csv] |
parallel_assets.js |
Serial vs worker_threads pool over a synthetic panel, with speedup. |
node parallel_assets.js --assets 200 --bars 5000 |
live_trading.js |
Live Binance feed → RSI / MACD / Bollinger → signals. | node live_trading.js --symbol BTCUSDT --interval 1m |
fetch_btcusdt.js |
Download real BTCUSDT klines from the Binance REST API into examples/data/ (built-in fetch, Node 18+). |
node fetch_btcusdt.js |
WebAssembly — examples/wasm/
| Example | What it does | Run |
|---|---|---|
index.html |
Browser demo: streams a price series through six indicators and draws a live <canvas> chart. |
wasm-pack build bindings/wasm --target web --release --features panic-hook, then serve the repository root and open examples/wasm/index.html |
Example datasets
examples/data/ holds seven real BTCUSDT OHLCV datasets, one
per timeframe (1m, 5m, 15m, 1h, 12h, 1d, 1month), in the standard
timestamp,open,high,low,close,volume layout. The Rust and Node backtest
examples and the indicator benchmarks run against them. Regenerate them with
the latest market history via cargo run -p wickra-examples --bin fetch_btcusdt.