R

Verified against the Rust reference. Every one of Wickra's 514 indicators is replayed through all 10 languages and checked bit-for-bit against the Rust core's golden fixtures in CI — the math here is provably identical to every other binding (how).

The R binding is a .Call shim on the C ABI hub (not extendr). It compiles a thin C glue layer against the prebuilt Wickra C ABI library and exposes all 514 indicators as constructors.

cargo build -p wickra-c --release
WICKRA_INCLUDE_DIR="$PWD/bindings/c/include" WICKRA_LIB_DIR="$PWD/target/release" \
  R CMD INSTALL bindings/r

• Distribution: R package (r-universe / source install); the native library is bundled per platform.
• Built on: the C ABI hub through R's native .Call interface, with C glue + R wrappers generated from wickra.h.
• Memory model: the handle is an R external pointer freed by a registered finalizer, so it is released automatically on garbage collection.

The object shape

Every indicator is a constructor returning a wickra_indicator object with generic update / batch / warmup_period / is_ready / reset methods.

library(wickra)

sma <- Sma(14)             # errors on invalid params
w <- warmup_period(sma)    # updates until ready: 14
v <- update(sma, 42)       # NA while warming up
ready <- is_ready(sma)     # FALSE until warmed up
reset(sma)

The alt-chart bar builders (RenkoBars(), KagiBars(), …) have no warmup_period() / is_ready() — a candle can complete 0..n bars, so they have no warmup.

Streaming

rsi <- Rsi(14)
for (price in feed) {
  v <- update(rsi, price)
  if (!is.na(v) && v > 70) message(sprintf("overbought %.2f", v))
}

Batch (one call over a whole series)

ema <- Ema(20)
values <- batch(ema, prices) # NA at warmup positions

Multi-output indicators

Indicators with several outputs return a named numeric vector — NA while warming up:

macd <- MacdIndicator(12, 26, 9)
for (price in feed) {
  m <- update(macd, price)
  if (!is.na(m[["macd"]])) {
    cat(sprintf("macd=%.4f signal=%.4f hist=%.4f\n",
                m[["macd"]], m[["signal"]], m[["histogram"]]))
  }
}

Candle-input indicators take OHLCV plus a timestamp, e.g. update(atr, open, high, low, close, volume, timestamp).

More

• Quickstart: R (docs)
• Examples
• Benchmarks