QCL Bollinger Trend Trail MT4
- Indicators
- Version: 1.1
Track trend direction with an adaptive trailing line directly on your MetaTrader 4 chart.
QCL Bollinger Trend Trail combines trend detection with integrated volatility filtering to provide a clear visual reference alongside price action.
Its two-color line advances as a trend develops and holds its position when conditions do not support further movement.
Key Features
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Adaptive trailing line: Follows developing price movements.
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Directional colors: Distinguishes upward and downward line movement.
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Integrated filtering: Always active, with an adjustable response period.
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Optional channel: Displays upper and lower boundaries for additional context.
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Simple settings: Five concise input parameters.
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Customizable appearance: Adjust colors, widths, and styles from the Colors tab.
Reading the Indicator
Blue sections indicate upward movement in the trailing line. Red sections indicate downward movement.
Flat sections retain the previous directional color. A color change reflects a change in the line’s direction and should be assessed alongside your trading setup.
The current candle updates with incoming prices. Its line position and color may change before the candle closes.
Input Parameters
| Parameter | Description |
|---|---|
| Period | Main calculation window. |
| Factor | Adjusts trend detection sensitivity. |
| Filter | Response period of the integrated filter. |
| Show Channel | Shows or hides the upper and lower channel. |
| Zero Start | Enables initialization from zero. Leave disabled for the default first-signal initialization. |
Default settings: Period 21 · Factor 1.0 · Filter 5 · Show Channel false · Zero Start false.
Color Settings
The MT4 version uses alternating line segments to maintain continuity through direction changes.
Configure the following rows in the Colors tab:
| Row | Display |
|---|---|
| 0 — Trail Up A | Upward sections |
| 1 — Trail Down A | Downward sections |
| 2 — Trail Up B | Alternating upward sections |
| 3 — Trail Down B | Alternating downward sections |
| 4 — Upper Channel | Optional upper boundary |
| 5 — Lower Channel | Optional lower boundary |
Use the same color and width for rows 0 and 2, and the same color and width for rows 1 and 3, for a consistent appearance.
Platform and Use
Designed for MetaTrader 4, with the line displayed in the main price chart window.
Use it as a visual reference for trend analysis alongside your entry criteria and risk management process. It does not place trades or guarantee trading results.
