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# Trend Score Pro (Indicator)
## 1. Summary
**Trend Score Pro** is a context-layer indicator designed to measure the strength and stability of a trend relative to market volatility. Instead of simply showing a moving average, it quantifies **"how far"** the price is from that average (in ATR units) and **"how fast"** that average is rising or falling.
This creates a normalized "Score" that allows you to compare trend strength across different assets (e.g., comparing BTCUSD trend strength with EURUSD trend strength objectively).
## 2. Methodology
The indicator visualizes two key metrics:
### A. Trend Score (Histogram)
* **Formula:** `(Price - DSMA) / ATR`
* **Meaning:** Measures the deviation of price from the trend baseline.
* **Score > 1.0 (Green):** Price is extended above equilibrium. Strong Bull Trend.
* **Score < -1.0 (Red):** Price is extended below equilibrium. Strong Bear Trend.
* **Score ~ 0.0 (Gray):** Price is hugging the line. Range/Choppy market.
### B. Trend Slope (Line)
* **Formula:** `(DSMA_Current - DSMA_Prev) / ATR`
* **Meaning:** Measures the acceleration of the trend itself.
* If the **Histogram is High** but the **Slope Line is Falling**, it indicates a "Divergence" or loss of momentum, even if the price is still high. This is an early warning signal of trend exhaustion.
## 3. MQL5 Implementation Details
* **Engine:** Utilizing `CDSMACalculator` for the underlying trend baseline (John Ehlers' Deviation Scaled Moving Average) and `CATRCalculator` for normalization.
* **Metrics Tool:** Uses the standardized `CalculateDeviation` logic to ensure consistency with the `Market_Scanner_Pro` script.
## 4. Parameters
* `InpDSMAPeriod`: Lookback for the Trend Baseline (Default: 40).
* `InpATRPeriod`: Lookback for Volatility Normalization (Default: 14).
* `InpSlopeLookback`: How many bars back to compare for slope calculation (Default: 5).
* `InpScoreThresh`: The level at which the histogram changes color to indicate a "Strong Trend" (Default: 1.0).