mql5/Indicators/MyIndicators/AMA_MTF_Pro.md

Adaptive Moving Average (AMA) MTF Pro

1. Summary (Introduction)

The AMA_MTF_Pro is a multi-timeframe (MTF) version of Perry Kaufman's renowned Adaptive Moving Average. This indicator calculates the AMA on a higher, user-selected timeframe and projects its intelligent, adaptive trendline onto the current, lower-timeframe chart.

This allows traders to visualize the underlying, noise-filtered trend from a broader perspective. The higher-timeframe AMA acts as a superior dynamic benchmark for support, resistance, and overall market direction, as it automatically adjusts its speed to the conditions of that higher timeframe.

The indicator is highly versatile: if the user selects the current chart's timeframe, it functions identically to the standard AMA_Pro indicator. It also fully supports both standard and Heikin Ashi price data.

2. Mathematical Foundations and Calculation Logic

The underlying calculation is identical to the standard AMA, utilizing the Efficiency Ratio (ER) to dynamically adjust the smoothing factor. The key innovation here is the multi-timeframe application.

Calculation Steps (Algorithm)

1. Fetch Higher Timeframe Data: The indicator retrieves the OHLC price data for the user-selected higher timeframe (htf).
2. Calculate AMA on the Higher Timeframe: The complete AMA calculation (including ER, Scaled Smoothing Constant, and the recursive formula) is performed using the htf price data.
3. Project to Current Chart: The calculated htf AMA values are mapped to the current chart, creating a characteristic "step-like" line that represents the higher timeframe's adaptive trend.

3. MQL5 Implementation Details

• Self-Contained and Robust: This indicator is fully self-contained and does not depend on any external indicator files (iCustom). It directly fetches the required higher-timeframe price data using built-in Copy... functions for maximum stability.

• Modular Calculation Engine (AMA_Calculator.mqh): The indicator reuses the exact same calculation engine as the standard AMA_Pro. This ensures mathematical consistency across all versions.

• Optimized Incremental Calculation (O(1)): Unlike basic MTF indicators that recalculate the entire history on every tick, this indicator employs a sophisticated incremental algorithm:

  • HTF State Tracking: It tracks the calculation state of the higher timeframe separately (g_htf_prev_calculated).
  • Persistent Buffers: The internal buffer for the higher timeframe is maintained globally, preserving the recursive state of the AMA between ticks.
  • Efficient Mapping: The projection loop only updates the bars corresponding to the new data.
  • This ensures the indicator remains lightweight and high-performance even on heavy load.

• Dual-Mode Logic: The OnCalculate function contains a smart branching logic.

  • If a higher timeframe is selected, it performs the optimized MTF data fetching and projection process.
  • If the current timeframe is selected, it bypasses the MTF logic and functions identically to the standard AMA_Pro.

4. Parameters

• Upper Timeframe (InpUpperTimeframe): The higher timeframe on which the AMA will be calculated. If set to PERIOD_CURRENT, the indicator will run on the current chart's timeframe.
• AMA Period (InpAmaPeriod): The lookback period for the Efficiency Ratio calculation. (Default: 10).
• Fast EMA Period (InpFastEmaPeriod): The period for the fastest EMA speed. (Default: 2).
• Slow EMA Period (InpSlowEmaPeriod): The period for the slowest EMA speed. (Default: 30).
• Applied Price (InpSourcePrice): The source price for the calculation (Standard or Heikin Ashi).

5. Usage and Interpretation

The MTF version of AMA is an exceptionally powerful tool for multi-timeframe trend analysis.

• Dynamic Support and Resistance: The primary use of the MTF AMA is as a dynamic, high-level area of support and resistance. Because AMA adapts to the higher timeframe's volatility, the levels it provides are often more respected by price than a standard MTF moving average.

• Major Trend and Range Filter: The state of the MTF AMA line provides a clear, smoothed-out view of the dominant market condition.

  • If the price is consistently above a rising MTF AMA, the market is in a strong uptrend.
  • If the price is consistently below a falling MTF AMA, the market is in a strong downtrend.
  • If the MTF AMA line flattens out, it is a very strong signal that the higher timeframe has entered a consolidation or ranging phase. This suggests that breakout strategies on the lower timeframe are likely to fail.

• Confirmation of Breakouts: A breakout on the lower timeframe that is supported by a steepening slope of the MTF AMA line is a much stronger and more reliable signal.