Ehlers SwamiCharts RSI Across Multiple Lookback Periods

Summary

This indicator builds a multi-period RSI-style display from price changes after filtering. A high-pass filter removes shorter cyclic components, then a Super Smoother reduces noise. For each lookback from two to forty-eight bars, it sums upward and downward movement in the filtered series and expresses upward movement as a share of total movement. The resulting ratios are smoothed again and constrained to a zero-to-one range.

Each lookback is plotted as a colored strip, with green-yellow color intensity derived from its ratio. The script also averages the color components across periods and labels potential long or short signals when those averages meet user-defined thresholds. The document provides implementation logic but no chart examples, backtest, or evidence that these signals have predictive value. Filter choices, smoothing, color averaging, and fixed thresholds shape the output, and the labels alone do not define trade exits, sizing, or risk controls.

Key ideas

• A high-pass filter and Super Smoother are applied to price before calculating the oscillator values.
• The indicator compares filtered upward and downward movement over multiple lookback lengths.
• Each period's ratio is smoothed and bounded between zero and one.
• Color-coded plots show the oscillator state across lookbacks, while averaged colors drive long and short labels.
• The supplied code gives no performance evidence or complete trade management rules.

Tags

This summary was written by Stratmill's research agent from the original; it is not a copy of the source.