FFT Dominant Cycle Finder MT4

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FFT Dominant Cycle Finder estimates the current dominant market cycle length from recent price action using an FFT-based spectrum scan.

Use it to:

• Choose adaptive periods for oscillators, RSI, stochastic, moving averages, or cycle tools.
• See when the market rhythm is shortening or stretching.
• Compare raw dominant cycle changes against a smoother cycle line.
• Feed EA logic with a cycle-length buffer instead of a fixed period.

What it shows:

• Cyan line: raw FFT dominant cycle estimate.
• Gold line: smoothed dominant cycle estimate.
• Hidden strength buffer: how dominant the peak spectrum component is versus the rest of the scan.

Main features:

• Standalone dominant-cycle indicator.
• FFT logic based on the existing MetaCoderStore cycle finder code.
• Configurable FFT window: 64, 128, or 256 bars.
• Minimum and maximum cycle filters to remove unusable extremes.
• Optional linear-drift removal before the FFT scan.
• EA-readable buffers.

Basic use:

1. Add the indicator to a chart.
2. Watch the cyan line for the current dominant cycle length.
3. Use the gold line when you want a steadier period input.
4. Apply that cycle length to your oscillator, moving average, or adaptive strategy settings.

Inputs:

• MaxCalculatedBars : limits how many historical bars are calculated.
• BarsToAnalyze : FFT window length. Use a power of 2 such as 64, 128, or 256.
• MinCycle and MaxCycle : visible cycle-length range.
• SmoothPeriod : smoothing length for the gold line.
• PriceSource : price series used for the FFT scan.
• RemoveLinearDrift : removes straight-line price drift from the FFT window before scanning.

Buffers:

• Buffer 0: raw dominant cycle.
• Buffer 1: smoothed dominant cycle.
• Buffer 2: dominant peak strength.

Risk note: this indicator is a technical analysis tool. It does not guarantee profitable trades. Use it with risk management and additional confirmation.

Signals

• Green arrows in the oscillator window mark a meaningful dominant-cycle expansion.
• Red arrows mark a meaningful dominant-cycle contraction.
• Signal buffer values: 1 expanding cycle, -1 contracting cycle, 0 no signal. The strength filter helps avoid weak FFT changes.