Real author:
klot
This indicator is an example of smoothing the Bulls Power 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 Bulls Power series is repeated.
This indicator requires the following library:
Fig.1. The i-SpectrAnalysis_BullsPower indicator