# Ergodic Oscillator Ergodic Oscillator is an indicator on [Vela](https://vela.luxalgo.com/chart), our next-generation charting platform, written in Pine Script®. William Blau's double-smoothed momentum ratio scaled to +/-100: one-bar price change run through 20- and 5-length EMA stages and divided by the same pipeline on absolute change, paired with a 5-period signal line and a histogram of the gap. Columns brighten while the gap widens and fade as it narrows, with alerts on crosses, zero flips and extreme-band entries. - Indicator in the LuxAlgo Library, by LuxAlgo, published Apr 15, 2026. - Access: free. - Concepts: [Ergodic Oscillator](https://www.luxalgo.com/library/concept/ergodic-oscillator/) (primary) - Open on Vela: https://vela.luxalgo.com/chart?pineScriptCodeId=gegyyjnb9djxcbl4gmsjr4qi - Page: https://www.luxalgo.com/library/indicator/ergodic-oscillator/ **Ergodic Oscillator** plots William Blau's double-smoothed momentum ratio: one-bar price change passed through a 20-length and then a 5-length EMA, divided by the identical pipeline applied to the absolute change, and scaled to +/-100. Because numerator and denominator carry the same lag, the [ergodic oscillator](https://www.luxalgo.com/library/concept/ergodic-oscillator/) reads as a bounded, unusually smooth momentum line; the build adds a 5-period signal line and a histogram of their gap whose shading encodes acceleration. ## How to Trade the Ergodic Oscillator? - **Signal-line crosses**: the momentum triggers, best taken with the zero line or a trend filter as referee. - **Zero crosses**: net double-smoothed momentum changing sign, the slower trend-change cue. - **Fading histogram**: bright columns mark a widening line-signal gap; faded columns mean it is closing: momentum rolling over before the cross, alertable both ways. - **Extreme-band entries**: pushes beyond the bands are overbought or oversold context. Stand down on fresh entries rather than fade automatically. Like most of the [momentum family](https://www.luxalgo.com/library/family/momentum/), it reads best as a timing layer: zero line for regime, crosses for moments. ## Ergodic Oscillator Settings - **Source** (default close). - **Long Smoothing Length** (default 20): the first EMA stage. Longer settings slow and clean the line for regime and divergence reads. - **Short Smoothing Length** (default 5): the second EMA stage, the responsiveness fine-tune. - **Signal Length** (default 5): EMA of the ergodic line forming the signal. - **Extreme Bands** (default disabled; Upper 25, Lower -25): dashed context levels (extremes are instrument-specific), and the band alerts fire regardless. - **Style toggles**: Show Histogram and Gradient Fill default on, plus line, signal and level colors. ## Frequently Asked Questions ### Is this the same construction as the True Strength Index? The core ratio is identical: both are Blau's double-smoothing recipe, and the [True Strength Index](https://www.luxalgo.com/library/indicator/true-strength-index/) presents it primarily as a line. This presentation adds the signal-line pairing and the histogram variant with acceleration shading. ### What do the two smoothing lengths trade off? The long stage sets character: at 20 the line suits regime and divergence reads, while shortening it moves the study toward a fast trigger. Blau's insight was that two light smoothings beat one heavy one for keeping turn timing. ### Why can the reading look strong in a quiet drift? Net change divided by total change rewards one-way consistency, not magnitude. A quiet crawl of small same-direction bars can print as boldly as a violent trend. Treat stretched readings in thin markets with extra skepticism. ## Related indicators - [Internal Candle Strength](https://www.luxalgo.com/library/indicator/internal-candle-strength/) (Balance of Power): markdown at https://www.luxalgo.com/library/indicator/internal-candle-strength.md - [Pretty Good Oscillator](https://www.luxalgo.com/library/indicator/pretty-good-oscillator/) (Momentum & Oscillators): markdown at https://www.luxalgo.com/library/indicator/pretty-good-oscillator.md - [Gator Oscillator](https://www.luxalgo.com/library/indicator/gator-oscillator/) (Momentum & Oscillators): markdown at https://www.luxalgo.com/library/indicator/gator-oscillator.md - [Wave Trend Oscillator](https://www.luxalgo.com/library/indicator/wave-trend-oscillator/) (Momentum & Oscillators): markdown at https://www.luxalgo.com/library/indicator/wave-trend-oscillator.md - [Traders Dynamic Index](https://www.luxalgo.com/library/indicator/traders-dynamic-index/) (Momentum & Oscillators): markdown at https://www.luxalgo.com/library/indicator/traders-dynamic-index.md - [Center of Gravity](https://www.luxalgo.com/library/indicator/center-of-gravity/) (Momentum & Oscillators): markdown at https://www.luxalgo.com/library/indicator/center-of-gravity.md - [QQE Weighted Oscillator](https://www.luxalgo.com/library/indicator/qqe-weighted-oscillator/) (QQE): markdown at https://www.luxalgo.com/library/indicator/qqe-weighted-oscillator.md - [5/35 Oscillator](https://www.luxalgo.com/library/indicator/5-35-oscillator/) (Momentum & Oscillators): markdown at https://www.luxalgo.com/library/indicator/5-35-oscillator.md --- Source: https://www.luxalgo.com/library/indicator/ergodic-oscillator/ (LuxAlgo Library). Free to use with attribution: https://www.luxalgo.com/library/license/