RelativeStrengthIndex

---

class backtide.indicators.RelativeStrengthIndex(period=14)

Relative Strength Index (RSI).

A momentum oscillator that measures the speed and magnitude of recent price changes on a scale of 0 to 100. Values above 70 are typically considered overbought; below 30, oversold. Useful for identifying overbought/oversold conditions, spotting divergences, and confirming trend strength.

Formula:

\[RSI = 100 - \frac{100}{1 + RS}\]

where \(RS = \frac{\text{avg gain over } n}{\text{avg loss over } n}\). Read more on Wikipedia.

Parameters	period : int, default=14 Look-back window length.
Attributes	acronym : str Short ticker-style acronym. name : str Human-readable indicator name.

See Also

CommodityChannelIndex

Commodity Channel Index (CCI).

MovingAverageConvergenceDivergence

Moving Average Convergence Divergence (MACD).

StochasticOscillator

Stochastic Oscillator (STOCH).

Methods

compute	Compute the indicator on a dataset.
description	Short explanation of what the indicator measures.

method backtide.indicatorscompute(data)

Compute the indicator on a dataset.

Parameters	data : np.ndarray | pd.DataFrame | pl.DataFrame Historical OHLCV data.
Returns	np.ndarray | pd.Series | pl.Series | pd.DataFrame | pl.DataFrame The computed values. For multi-output indicators (e.g., upper and lower bounds), return a 2d structure.

method backtide.indicatorsdescription()

Short explanation of what the indicator measures.

Returns

str The description.