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 v4 · On the chart
Bar States
This educational indicator demonstrates the behavior of Pine Script bar state built-in variables across the chart.
GitHub stars65on the repository
Pine versionv4older, still runs
Lines of code16
Settings0inputs
LicenceGPL-3.0
Last update4 days ago24 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
16 lines of Pine Script v4 from examples/v4/tradingview-docs/v4-essential-bar-states-built-in-variables-barstate-00.pine, published under GPL-3.0. Keep the author's credit and licence lines when you reuse it.
//@version=4
study("Bar States", overlay = true)
first = barstate.isfirst
last = barstate.islast
hist = barstate.ishistory
rt = barstate.isrealtime
new = barstate.isnew
conf = barstate.isconfirmed
t = new ? "new" : conf ? "conf" : "intra-bar"
t := t + (hist ? "\nhist" : rt ? "\nrt" : "")
t := t + (first ? "\nfirst" : last ? "\nlast" : "")
label.new(bar_index, na, yloc=yloc.abovebar, text=t,
color=hist ? color.green : color.red)
Overview
Bar States checks whether each candle is historical or real-time, new or confirmed, and whether it represents the first or last bar. For each bar, it renders a text label directly above the price candle displaying these state flags, styling historical bars in green and real-time bars in red. The script includes no trading signals or configurable inputs.
- Bar state built-in variable inspection
- Above-bar diagnostic text labels
- Color distinction for historical and real-time bars
Details
Published by
be-thomas on GitHub
Type
Indicator, Pine Script v4
Draws
On the price chart
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-tradingbacktestingcompilerfintechjavascriptpinescripttechnical-analysistradingview
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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