EhlersUS

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EhlersUS

Category

Multi-Bar Functions

Description

Ultimate Smoother filter as described by John Ehlers.

Syntax

EhlersUS(expr, count)

Parameters

expr - data series formula

count - lookback period

Notes

Combines HighPass and SuperSmoother characteristics to remove both high-frequency noise and low-frequency trend, isolating the dominant cycle component.

Produces a zero-mean oscillator centered on the cycle period.

This function supports one-pass calculation when used in the Data Section.

Example

EhlersUS(Close, 20)

Extracts the dominant cycle component near 20 bars, removing both trend and noise.

The result oscillates around zero and can be used to identify turning points.