This script plots three moving averages on the price chart: a fast EMA or SMA with 10 periods, a slow EMA or SMA with 20 periods, and a trend EMA or SMA with 100 periods. It signals trend changes by drawing a white cross when the fast moving average crosses ab
Indicator · Pine Script v4 · On the chart
Finite Impulse Response (FIR) Filter
The Finite Impulse Response (FIR) Filter is a smoothed technical indicator plotted directly on the main price chart.
GitHub stars948on the repository
Pine versionv4older, still runs
Lines of code36
Settings9inputs
LicenceGPL-3.0
Last update10 days ago18 Oct 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
36 lines of Pine Script v4 from movings/finite_impulse_response_filter.pine, published under GPL-3.0. Keep the author's credit and licence lines when you reuse it.
//@version=4
// Copyright (c) 2018-present, Alex Orekhov (everget)
// Finite Impulse Response (FIR) Filter script may be freely distributed under the terms of the GPL-3.0 license.
study("Finite Impulse Response (FIR) Filter", shorttitle="FIRF", overlay=true)
coef1 = input(title="1st Coefficient", type=input.float, step=0.1, defval=1)
coef2 = input(title="2nd Coefficient", type=input.float, step=0.1, defval=3.5)
coef3 = input(title="3rd Coefficient", type=input.float, step=0.1, defval=4.5)
coef4 = input(title="4th Coefficient", type=input.float, step=0.1, defval=3)
coef5 = input(title="5th Coefficient", type=input.float, step=0.1, defval=0.5)
coef6 = input(title="6th Coefficient", type=input.float, step=0.1, defval=-0.5)
coef7 = input(title="7th Coefficient", type=input.float, step=0.1, defval=-1.5)
src = input(title="Source", type=input.source, defval=close)
highlight = input(title="Highlight ?", type=input.bool, defval=true)
src1 = nz(src[1], src)
src2 = nz(src[2], src1)
src3 = nz(src[3], src2)
src4 = nz(src[4], src3)
src5 = nz(src[5], src4)
src6 = nz(src[6], src5)
coefSum = coef1 + coef2 + coef3 + coef4 + coef5 + coef6 + coef7
firf = (
coef1 * src +
coef2 * src1 +
coef3 * src2 +
coef4 * src3 +
coef5 * src4 +
coef6 * src5 +
coef7 * src6
) / coefSum
firfColor = highlight ? firf > firf[1] ? color.green : color.red : #6d1e7f
plot(firf, title="FIRF", linewidth=2, color=firfColor, transp=0)
Overview
Finite Impulse Response (FIR) Filter calculates a weighted moving average using seven configurable coefficient inputs applied to current and historical price values. The filter smooths out market noise to help identify prevailing trends. Users can customize each coefficient weight, select the price source, and toggle color highlighting, which shades the filter line green when rising and red when falling.
- 7-point customizable weighting coefficients
- Dynamic rising and falling color highlighting
- Configurable price source selection
Details
Published by
everget on GitHub
Type
Indicator, Pine Script v4
Draws
On the price chart
Category
Moving averages, 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.
Repository
Topics
pinepinescripttechnical-indicatorsindicatorsoscillatorbandsaveragetradingviewindicatormoving-average
Settings
The inputs you can change from the gear icon on the chart. Defaults are the author's.
| Setting | Type | Default | Variable |
|---|---|---|---|
| 1st Coefficient | float | 1 | coef1 |
| 2nd Coefficient | float | 3.5 | coef2 |
| 3rd Coefficient | float | 4.5 | coef3 |
| 4th Coefficient | float | 3 | coef4 |
| 5th Coefficient | float | 0.5 | coef5 |
| 6th Coefficient | float | -0.5 | coef6 |
| 7th Coefficient | float | -1.5 | coef7 |
| Source | source | close | src |
| Highlight ? | bool | true | highlight |
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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