The Trailing Drawdown indicator calculates and visualizes the percentage drop of a price series from its peak over a user-specified lookback period. It tracks maximum price levels within a rolling window and measures the current deviation from those peaks. Tra
Indicator · Pine Script v4 · Own pane
Debugging from inside for loops
This indicator walks a user-set lookback and compares the current true range with each earlier true range.
GitHub stars65on the repository
Pine versionv4older, still runs
Lines of code12
Settings1inputs
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
12 lines of Pine Script v4 from examples/v4/tradingview-docs/v4-debugging-13.pine, published under GPL-3.0. Keep the author's credit and licence lines when you reuse it.
//@version=4
study("Debugging from inside `for` loops", max_lines_count = 500, max_labels_count = 500)
i_lookBack = input(20, minval = 0)
float trBalance = 0
for _i = 1 to i_lookBack
trBalance := trBalance + sign(tr - tr[_i])
line.new(bar_index[1], tr[_i], bar_index, tr[_i], color = color.black)
label.new(bar_index, tr[_i], tostring(_i) + "•" + tostring(tr[_i]), style = label.style_none, size = size.small)
hline(0)
plot(trBalance)
Overview
Debugging from inside for loops adds the sign of each difference into a running balance, plots that balance in a separate pane, and draws a zero line. For every step it also draws a horizontal line at the historical true range and a small label showing the loop index and value. The lookback input changes how many past bars are included. It is a documentation-style debug plot, not an entry or exit system.
- Lookback length input
- True range sign balance
- Historical true range lines
- Indexed true range labels
- Zero reference line
Details
Published by
be-thomas on GitHub
Type
Indicator, Pine Script v4
Draws
Separate pane below the chart
Category
Volatility & bands, Support & resistance
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.
| Setting | Type | Default | Variable |
|---|---|---|---|
| i_lookBack | int | 20 | i_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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