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Asymmetrical RSI is an indicator that computes a custom relative strength index from the rate of change of a user-selected source. It plots the resulting ARSI line in a separate pane with color coding that turns green above the overbought level and red below t
Indicator · Pine Script v5 · Own pane
John F. Ehlers - Zero Mean Roofing Filter
This indicator applies John Ehlers' roofing filter to a chosen price source in a separate pane.
GitHub stars20on the repository
Pine versionv5runs as is
Lines of code46
Settings2inputs
LicenceNone statedfile: MPL-2.0
Last update1 year ago12 Jul 2025
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
46 lines of Pine Script v5 from indicator/zero_mean_roofing_filter.pine, published under MPL-2.0 (file header). Keep the author's credit and licence lines when you reuse it.
// This source code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// © palitoj_endthen
//@version=5
indicator(title = 'John F. Ehlers - Zero Mean Roofing Filter', shorttitle = 'roofing_filter', overlay = false)
// input
hp_period = input.int(defval = 48, title = 'High-Pass Period', group = 'Value', tooltip = 'Determines the High-Pass period, default to 48')
src = input.source(defval = ohlc4, title = 'Source', group = 'Options', tooltip = 'Detmerines the source of input data, default to ohlc4')
// variable
alpha1 = .00
hp = .00
a1 = .00
b1 = .00
c1 = .00
c2 = .00
c3 = .00
filt = .00
filt2 = .00
// roofing filter
// high-pass filter cycling components whose periods are shorter than 48 bars
pi = 2*math.asin(1)
alpha1 := (math.cos(360/hp_period) + math.sin(360/hp_period)-1)/math.cos(360/hp_period)
hp := (1-alpha1/2)*(src-src[1])+(1-alpha1)*nz(hp[1])
// smooth with super smoother filter
a1 := math.exp(-1.414*pi/10)
b1 := 2*a1*math.cos(1.414*180/10)
c2 := b1
c3 := -a1*a1
c1 := 1-c2-c3
filt := c1*(hp+hp[1])/2+c2*nz(filt[1])+c3*nz(filt[2])
filt2 := (1-alpha1/2)*(filt-filt[1])+(1-alpha1)*nz(filt2[1])
// visualize
_color = filt > filt[1] and filt > 0 ? color.green : filt > filt[1] and filt < 0 ? color.new(color.green, 80) : filt < filt[1] and filt > 0 ? color.new(color.red, 80) : color.red
color_con = filt > filt2 ? color.green : color.red
_color_con = filt > filt2
plot(filt, color = _color, linewidth = 3)
hline(0, color = color.gray, linestyle = hline.style_dashed)
Overview
A high-pass stage removes cycles longer than the high-pass period, then a fixed super smoother smooths the result and a second high-pass produces a comparison series. It plots the filtered line around a dashed zero line, coloring it by whether the value is rising or falling and above or below zero. The high-pass period and source are the main settings. It has no trade entries or exits.
- High-pass filter with adjustable period
- Fixed super smoother on the high-pass output
- Zero-line oscillator plot
- Color by slope and sign
- Selectable price source
Details
Published by
palitojendthen on GitHub
Type
Indicator, Pine Script v5
Draws
Separate pane below the chart
Category
Oscillators & momentum
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
indicatortechnical-analysispinescripttrading-algorithms
Settings
The inputs you can change from the gear icon on the chart. Defaults are the author's.
| Setting | Type | Default | Variable |
|---|---|---|---|
| High-Pass Period | int | 48 | hp_period |
| Source | source | ohlc4 | src |
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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