Free TradingView indicator
Harris RSI.
A Michael Harris variation of RSI, with optional threshold, direction, 50-line, and moving-average readings.
Overview
An alternative RSI calculation.
Harris RSI adapts the familiar Relative Strength Index idea using a method attributed to Michael Harris. Like other RSI variants, it compares recent positive and negative price changes and presents a momentum reading on a 0–100 scale. Its calculation is different from Wilder’s original RSI, so the two may disagree on the same chart.
The TradingView publication gives a brief calculation outline but not enough detail to make an exact formula claim here. The public source code remains the definitive reference for its implementation.
Interpretation
Read the line in context.
A rising or high reading can show stronger recent upside momentum; a falling or low reading can show stronger downside momentum. Overbought and oversold thresholds mark selected extremes, not guaranteed reversal points. Compare the oscillator with the trend, timeframe, and nearby price levels.
Optional signals
Several ways to filter the same reading.
You can use the indicator’s optional overbought/oversold states, trend-style threshold states, 50-line crosses, upward or downward direction, and RSI-versus-moving-average relationship. Choose the rule that answers your question rather than treating all of these related readings as separate evidence.
Signal behaviour changes with the chosen length, threshold, and moving-average settings. Test any rules before using them in a live decision.