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Published:

2015.10.13 09:57

Updated:

2016.11.22 07:32

\MQL5\Include\

dt_fft.mqh (28.84 KB) view

i-spectranalysis_wpr.mq5 (5.72 KB) view

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Real author:

klot

This indicator is an example of smoothing the Larry Williams' Percent Range indicator timeseries by filtering high-order harmonics.

You can use this approach for smoothing the output of any indicator. The major advantage of this method is that it has practically zero latency.

Indicator input parameters:

input uint   ForcePeriod=13;
input  ENUM_MA_METHOD   MAType=MODE_EMA;
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 indicator shift in bars

where:

N — sets the series length (power of two);
SS — smoothing coefficient in the resulting spectrum zeroes out frequencies exceeding the set value. SS cannot be greater than 2^N. If SS = 2^N, the WPR series is repeated.

This indicator requires the following library: https://www.mql5.com/ru/code/7000.

Fig.1. The i-SpectrAnalysis_WPR indicator

Translated from Russian by MetaQuotes Ltd.
Original code: https://www.mql5.com/ru/code/13757

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i-SpectrAnalysis_WPR - indicator for MetaTrader 5