Real author:
klot
The indicator exemplifies smoothing of price time series of the MFI indicator by means of filtration of harmonics of a greater order.
This approach can be applied for smoothening any indicators' values. The main advantage of the method is a real absence of a delay.
Indicator input parameters:
//+----------------------------------------------+ //| Indicator input parameters | //+----------------------------------------------+ input uint MFIPeriod=14; // Averaging period input ENUM_APPLIED_VOLUME VolumeType=VOLUME_TICK; // Volume input uint N = 7; // Series length input uint SS = 20; // Smoothing coefficient input int Shift=0; // Horizontal shift of the indicator in bars
where:
https://www.mql5.com/ru/code/7000 library is required for the indicator operation.

Fig.1. i-SpectrAnalysis_MFI Indicator
Translated from Russian by MetaQuotes Ltd.
Original code: https://www.mql5.com/ru/code/7003
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i-SpectrAnalysis
The indicator exemplifies smoothing of price time series by means of filtration of harmonics of a greater order.