BB vs EMA 9 Gap Signals

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### Bollinger Band EMA Gap Signal

This indicator identifies potential **BUY and SELL opportunities** by comparing the distance between the **9-period EMA** and the upper/lower Bollinger Bands.

#### How It Works

The indicator calculates two distances:

* **X** = Upper Bollinger Band − 9 EMA
* **Y** = 9 EMA − Lower Bollinger Band

### 🟢 BUY Signal

A BUY signal is generated when:

1. **Y > X**, meaning the Lower Bollinger Band is farther from the 9 EMA than the Upper Bollinger Band.
2. Price **touches or crosses the Lower Bollinger Band**.

This identifies situations where downside volatility has expanded significantly relative to upside volatility.

### 🔴 SELL Signal

A SELL signal is generated when:

1. **X > Y**, meaning the Upper Bollinger Band is farther from the 9 EMA than the Lower Bollinger Band.
2. Price **touches or crosses the Upper Bollinger Band**.

This identifies situations where upside volatility has expanded significantly relative to downside volatility.

### Key Features

* Uses a **9-period EMA**.
* Uses standard **20-period Bollinger Bands with 2 standard deviations** by default.
* Requires price to touch or cross the relevant Bollinger Band.
* Generates BUY and SELL signals immediately when the conditions are satisfied.
* Includes alert conditions for TradingView alerts.

**Note:** The signals are based on technical conditions and should not be considered guaranteed entry or exit points. Always combine the indicator with proper risk management and market context.

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