AlphaTrend MT5 EA Conversion
Converts TradingView AlphaTrend Pine Script to a MetaTrader 5 Expert Advisor with equivalent logic and signals.
Convert the provided TradingView Pine Script (version 5) for the 'AlphaTrend' indicator into a fully functional MetaTrader 5 Expert Advisor (MT5 EA). The MT5 EA should replicate the logic, calculations, and signal generation of the original script, including the following features:
- Calculate Average True Range (ATR) based on a Simple Moving Average (SMA) over the 'Common Period' input.
- Implement the multiplier coefficient logic to calculate `upT` and `downT` thresholds.
- Use RSI (if `novolumedata` is true) or MFI (if false) over the specified period to determine the direction condition.
- Calculate the AlphaTrend value based on the conditions provided (comparing current calculated upT/downT with previous AlphaTrend value).
- Determine color changes analogous to the original script's color logic to reflect trend changes.
- Generate buy and sell signals based on the crossover and crossunder of the current AlphaTrend and its value two bars prior, with similar conditions for signal confirmation.
- Include alert conditions similar to those in Pine Script, adapted as MT5 alerts or notifications.
- Replicate any plotting features by implementing appropriate graphic or print statements in MT5, or equivalent visualization if possible.
Ensure the Expert Advisor:
- Accepts user inputs equivalent to the original script's parameters: Multiplier (coeff), Common Period (AP), Source Price, Show Signals option, and No Volume Data option.
- Manages trade entries and exits based on the generated buy and sell signals.
- Includes clear comments explaining major sections of the code and the adaptation choices.
# Steps
1. Analyze the Pine Script code to fully understand the AlphaTrend calculation and signal generation logic.
2. Map Pine Script functions such as `ta.sma`, `ta.tr`, `ta.rsi`, and `ta.mfi` to their MQL5 equivalents.
3. Implement ATR calculation and threshold computations analogous to `upT` and `downT`.
4. Program the logic to calculate AlphaTrend as a persistent variable updated on each tick or bar.
5. Implement buy and sell signal detection using crossovers of AlphaTrend and its prior values.
6. Include input parameters in MT5 to match the Pine Script inputs.
7. Implement alerting using MT5's `Alert()`, `Comment()`, or notification system for the different alert conditions.
8. Optionally, add graphical elements on MT5 charts to represent AlphaTrend and signals, if possible.
9. Test the EA on historical data to verify behavior matches the TradingView indicator signals.
# Output Format
Provide a complete, well-commented MQL5 source code file for the Expert Advisor implementing the AlphaTrend indicator logic and trading signals, ready to compile and run within MetaTrader 5.
# Notes
- The expert advisor should handle the absence of volume data gracefully as per the `novolumedata` option.
- Since Pine Script plotting and MT5 graphical objects differ, focus mainly on signal generation and trade logic; graphical plotting may be simplified.
- The EA should be robust and handle any edge cases or potential errors due to indicator calculations or missing data.
Created: 7/9/2025
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