RSI + BB (EMA) + Dispersion (2.0)
Oct 2, 2018

The RSI + BB (EMA) + Dispersion (2.0) indicator provides a multi-layered technical analysis framework by applying Bollinger Bands and a central dispersion zone directly to the Relative Strength Index (RSI). This tool assists traders in identifying momentum shifts and trend reversals by monitoring when the RSI exits a defined central "neutral" range or breaches volatility-based boundaries.
Usage
The RSI + BB (EMA) + Dispersion (2.0) indicator is used to identify entry and exit points based on the movement of the RSI relative to its own moving average and volatility bands.
- Bullish Signal: A potential buy signal occurs when the RSI line crosses above the upper boundary of the dispersion zone (the central shaded area).
- Bearish Signal: A potential sell signal occurs when the RSI line crosses below the lower boundary of the dispersion zone.
- Neutral Zone: The area between the dispersion lines (often highlighted in a neutral color) acts as a buffer. Transactions are generally not recommended when the RSI remains within this zone as it indicates a lack of clear momentum.
- Volatility Extremes: The outer Bollinger Bands (Upper and Lower BB) indicate extreme RSI levels relative to recent price action, often used to identify overextended conditions.
Details
The script is constructed using three primary mathematical components:
- Relative Strength Index (RSI): The base oscillator used to measure the speed and change of price movements.
- EMA-based Bollinger Bands: Unlike standard Bollinger Bands that use a Simple Moving Average, this script calculates the Basis using an Exponential Moving Average (EMA) of the RSI. The bands are then projected from this EMA using a standard deviation multiplier.
- Dispersion Zone: This is a secondary, tighter set of bands derived from the width of the Bollinger Bands. The "Sigma" input determines what percentage of the total BB width constitutes the dispersion zone around the EMA basis.
By combining these elements, the indicator filters out minor RSI fluctuations and focuses on significant moves away from the central mean.
Settings
- Source: Determines the price data used to calculate the RSI (default is close).
- RSI Period: The lookback period for the RSI calculation (default is 14).
- Basis BB: The period used for the Exponential Moving Average (EMA) that forms the basis of the Bollinger Bands.
- Stdev: The multiplier for the standard deviation to determine the width of the outer Bollinger Bands.
- Dispersion: A factor (ranging from 0.01 to 1) that determines the size of the inner dispersion zone relative to the total width of the Bollinger Bands.
FAQ
How do I interpret the color changes in the RSI line? The RSI line changes color based on its position relative to the dispersion zone: green indicates it is above the zone (bullish momentum), red indicates it is below the zone (bearish momentum), and blue/neutral indicates it is within the dispersion zone.
What is the difference between the Bollinger Bands and the Dispersion zone in this script? The Bollinger Bands represent the outer volatility limits of the RSI, while the Dispersion zone represents a localized "noise" threshold around the average (EMA). Crosses of the Dispersion zone are typically used for early signal detection.
How can I access the RSI + BB (EMA) + Dispersion (2.0) indicator? You can get access on the LuxAlgo Library for charting platforms like TradingView, MetaTrader (MT4/MT5), and NinjaTrader for free.
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