Goertzel Cycle Finder

A full spectrum answers "what frequencies are present at all"; this asks a narrower, cheaper question - "how strong is EACH SPECIFIC period in my chosen range" - and answers it directly. The Goertzel algorithm evaluates one candidate period in O(N) work using a short recursive filter, so testing every integer period between InpMinPeriod and InpMaxPeriod costs only a targeted scan across that range, not a full transform's worth of bins that then need filtering down to the interesting ones. The analysed window is linearly detrended first, for the same reason a full spectrum is: without it, the underlying trend would dominate every period test and mask genuine cyclical structure. Each candidate period's Goertzel recursion yields real and imaginary components directly, from which amplitude (in price units) and phase (referenced to the start of the analysis window) fall out with no extra pass over the data. The panel ranks the InpTopCount strongest periods by that power and lists all three figures for each - enough to judge not just which periods matter but how big their swing currently is and where in their cycle the market currently sits. Notes and limitations - Needs InpWindowBars plus one bar of history before the panel can fill. - Nearby periods (for example 19 and 20 bars) that both partially match the same real cycle are not merged or de-duplicated; they may both appear in the ranked list as if they were separate cycles. - Amplitude and power describe how strongly a period matched the ANALYSED WINDOW, not a forecast that it will keep matching. - Recomputed once per closed bar, so nothing here can repaint a bar that has already closed.

Indicator · MT4 · v1.0 · Free

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