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Momentum OscillatorsPine Script v6

ta.rci()Rank Correlation Index

The Rank Correlation Index measures the correlation between price rankings and time rankings.

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Syntax

Syntax
ta.rci(source, length) → series float

Arguments

ParameterTypeDescription
sourceseries int/floatSeries whose ranks are compared to time ranks.
lengthseries intWindow length for rank correlation.

Returns

Rank Correlation Index.

Remarks

None.

Code Examples

Pine Script v6 Example
//@version=6
indicator("ta.rci")
plot(ta.rci(close, 14))

Trading Applications

Identify trend strength using rank correlation

Detect overbought/oversold conditions on a -100 to +100 scale

Generate signals from extreme readings

Use multiple timeframe RCI for confluence

Related Functions

ta.rsita.correlation

Frequently Asked Questions

ta.rci() returns the Rank Correlation Index, a momentum-style oscillator derived from Spearman-style rank correlation between ordered time and ordered price over length bars.

RSI is based on smoothed gain/loss ratios. RCI is based on rank ordering within the window, making it more robust to some outliers but interpreting differently.

RCI often uses a -100 to +100 style scale; traders watch extremes as context for stretched conditions, calibrated per instrument.

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