Indicator · Pine Script v4 · Own pane

Debugging from inside for loops

by be-thomas

Calculates a True Range balance value by comparing the current True Range against historical True Range values over a user-defined lookback period using a loop.

View on GitHub

GitHub stars65on the repository
Pine versionv4older, still runs
Lines of code10
Settings1inputs
LicenceGPL-3.0
Last update4 days ago24 Oct 2026

Add It to Your TradingView Chart

  1. 1Copy the scriptPress Copy script above, or the copy button on the code below.
  2. 2Open the Pine EditorOpen a TradingView chart and choose Pine Editor at the bottom of the screen.
  3. 3Paste over the templateCreate a new indicator, select all of the template text and paste. Press Save and give it a name.
  4. 4Add it to the chartPress Add to chart, then adjust the settings with the gear icon next to its name.

Source Code

10 lines of Pine Script v4 from examples/v4/tradingview-docs/v4-debugging-11.pine, published under GPL-3.0. Keep the author's credit and licence lines when you reuse it.

v4-debugging-11.pine
//@version=4
study("Debugging from inside `for` loops")
i_lookBack = input(20, minval = 0)

float trBalance = 0
for _i = 1 to i_lookBack
    trBalance := trBalance + sign(tr - tr[_i])

hline(0)
plot(trBalance)

Overview

For each historical bar within the lookback window, it evaluates the sign of the True Range difference and sums the results. The script plots the cumulative balance line relative to a zero centerline in a separate indicator pane.

Details

Published by

be-thomas on GitHub

Type

Indicator, Pine Script v4

Draws

Separate pane below the chart

Category

Volatility & bands

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

Settings

The inputs you can change from the gear icon on the chart. Defaults are the author's.

SettingTypeDefaultVariable
i_lookBackint20i_lookBack
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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