The Adaptive Laguerre Filter calculates a smoothed, dynamically adjusted trendline plotted directly on the main price chart. It dynamically adjusts its damping factor (alpha) based on recent price range variations and median percentile calculations over a spec
Indicator · Pine Script v6 · On the chart
Ehlers 2-Pole Super Smoother Filter (SSF2)
This indicator plots John Ehlers' two-pole Super Smoother as a line on the price chart.
GitHub stars99on the repository
Pine versionv6current
Lines of code42
Settings2inputs
LicenceApache-2.0
Last update4 weeks ago27 Sep 2026
Add It to Your TradingView Chart
- 1Copy the scriptPress Copy script above, or the copy button on the code below.
- 2Open the Pine EditorOpen a TradingView chart and choose Pine Editor at the bottom of the screen.
- 3Paste over the templateCreate a new indicator, select all of the template text and paste. Press Save and give it a name.
- 4Add it to the chartPress Add to chart, then adjust the settings with the gear icon next to its name.
Source Code
42 lines of Pine Script v6 from lib/filters/ssf2/ssf2.pine, published under Apache-2.0. Keep the author's credit and licence lines when you reuse it.
// Licensed under the Apache License, Version 2.0
// © mihakralj
//@version=6
// Indicator algorithm (C) 2004-2024 John F. Ehlers
indicator("Ehlers 2-Pole Super Smoother Filter (SSF2)", "SSF2", overlay=true)
//@function Calculates 2-pole Supersmooth Lowpass Filter
//@param source Series to calculate SSF2 from
//@param length Number of bars used in the calculation
//@returns SSF2 value with optimized smoothing
//@optimized Uses 2-pole IIR Butterworth-style filter with O(1) complexity per bar
ssf2(series float src, simple int length) =>
var float SQRT2_PI = math.sqrt(2.0) * math.pi
var float ssf_internal = 0.0
var float c1 = 0.0
var float c2 = 0.0
var float c3 = 0.0
var int prev_length = 0
if prev_length != length
float arg = SQRT2_PI / float(length)
float exp_arg = math.exp(-arg)
c2 := 2.0 * exp_arg * math.cos(arg)
c3 := -exp_arg * exp_arg
c1 := 1.0 - c2 - c3
prev_length := length
float ssrc = nz(src, src[1])
float src1 = nz(src[1], ssrc)
float src2 = nz(src[2], src1)
ssf_internal := c1 * (ssrc + src1) * 0.5 + c2 * nz(ssf_internal[1], src1) + c3 * nz(ssf_internal[2], src2)
ssf_internal
// ---------- Main loop ----------
// Inputs
i_length = input.int(20, "Length", minval=1)
i_source = input.source(close, "Source")
// Calculation
ssf2_val = ssf2(i_source, i_length)
// Plot
plot(ssf2_val, "SSF2", color=color.yellow, linewidth=2)
Overview
Ehlers 2-Pole Super Smoother Filter (SSF2) applies a two-pole IIR Butterworth-style lowpass to the selected source, averaging the current and previous values and mixing them with two prior filter outputs. Length sets the filter period and rebuilds the coefficients when it changes; source selects the series being smoothed. It does not generate entries, exits, or risk levels.
- Two-pole Super Smoother lowpass
- Adjustable length and source
- Coefficients update when length changes
- Yellow overlay line on the price chart
- Constant work per bar
Details
Published by
mihakralj on GitHub
Type
Indicator, Pine Script v6
Draws
On the price chart
Category
Trend
Markets
Any symbol
Timeframes
Any timeframe
Risk Notes
No repainting, lookahead or stacked entries were found in its code or README. That says nothing about how well it works: test it first.
Topics
algorithmic-tradingcsharpdotnetpinescriptpythonquantitative-financesimdta-libtechnical-analysistechnical-indicators
Settings
The inputs you can change from the gear icon on the chart. Defaults are the author's.
| Setting | Type | Default | Variable |
|---|---|---|---|
| Length | int | 20 | i_length |
| Source | source | close | i_source |
Third-party code. ForexR did not write, test or endorse this script, and the summary above was generated automatically from its code and README. Indicators describe the past, and a strategy's backtest can look better than live trading, especially when a script repaints. Check it in the Strategy Tester and on a demo account before you rely on it.
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