Laguerre RSI Classic
- Indicators
- Andres Felipe Carvajal Rodriguez
- Version: 1.1
- Updated: 8 August 2025
Laguerre RSI: An Advanced Oscillator for Market Analysis
The Laguerre RSI is an advanced oscillator based on digital filters, developed by John Ehlers. This indicator smooths price fluctuations using a technique called the Laguerre filter, allowing for more precise detection of overbought and oversold zones while reducing market noise.
The Laguerre RSI oscillates between 0 and 1, with standard levels set as follows:
- Overbought: above 0.75
- Oversold: below 0.25
This indicator is ideal for detecting market turns, precise entries, and signal confirmations.
Optional Features
The Laguerre RSI includes optional functionalities such as:
- Sound, email, or push alerts
- Visual filling between critical zones
- Flexible smoothing parameter (gamma)
User Manual
Configurable Parameters:
1. Main Configuration
- gamma (0.1 to 0.9):
- Controls the degree of smoothing.
- Lower values → more sensitivity, more signals.
- Higher values → greater smoothness, less noise.
- overbought / oversold:
- Levels for marking extreme zones.
- Default:
- overbought = 0.75
- oversold = 0.25
2. Visual Appearance
- mainLineColor: Color of the main Laguerre RSI line.
- lineWidth: Thickness of the line.
- overboughtColor / oversoldColor: Colors of guide lines for key levels.
- fillBackground: Activates or deactivates filling between levels.
- fillColor: Color of the background zone (neutral).
3. Alerts
- alertsEnabled: Activates sound alerts when entering critical zones.
- emailAlerts / pushAlerts: Sends alerts via email or mobile notifications.
- alertPrefix: Custom text at the beginning of the alert message.
Suggested Strategies
Strategy 1: Confluence with MACD (D1 + H1)
Objective: To trade only in favor of the larger trend, using the Laguerre RSI as a trigger on lower timeframes.
Step-by-step:
- Open the chart in the daily timeframe (D1).
- Apply the standard MACD (12, 26, 9).
- If the MACD is below 0 → only look for SELLS.
- If the MACD is above 0 → only look for BUYS.
- Switch to the H1 timeframe.
- Apply the Laguerre RSI.
Combined Strategy with MACD and Laguerre RSI
When the MACD on the daily timeframe (D1) is below 0, the overall trend is bearish.
- In that case, switch to H1 and wait for the Laguerre RSI to cross downwards from the 0.75 level. This indicates a selling opportunity.
When the MACD on D1 is above 0, the trend is bullish.
- Then, switch to H1 and wait for the Laguerre RSI to cross upwards from the 0.25 level. This signals a good buying opportunity.
Advantages:
- Superior trend filter + entry precision.
- Reduces false signals.
- Increases success probability.
Strategy 2: Extreme Reversals
Wait for the Laguerre RSI to reach extremes (≈ 0 or ≈ 1) and then return to the middle range (0.5) to consider a reversal.
Strategy 3: With Support/Resistance
Combine the Laguerre RSI with key horizontal price levels. Enter when the price touches support/resistance and the RSI is in the opposite zone (buy at support + RSI < 0.25).
Final Recommendation
Use the Laguerre RSI as a complement to your analysis, not as a sole signal. It can be especially powerful when combined with:
- MACD
- Market structure
- Price action

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