Open-source scriptindicator/v1
Donchian Channels
Plot the highest high, lowest low, and midpoint across a rolling price window.
#breakout#channel#donchian
Description
Donchian Channels define a rolling price range using the highest high and lowest low over the chosen period. The boundaries are commonly used to study breakouts, while the midpoint provides a simple measure of the range center.
Open-source script. Everyone can inspect the source code, use the script on a chart, and save an editable copy.
Release notes
Version history · 1 published version
Version 1CurrentChart updatedDonchian Channels · Aug 31, 2026
Source codempl-2.0View sourceHide source
indicator("Donchian Channels", { overlay: true });
const length = input.int("Length", 20, { min: 1, max: 500 });
const upper = highest(high, length);
const lower = lowest(low, length);
const basis = upper.map((v, i) => (v + lower[i]) / 2);
plot(upper, { title: "Upper", color: "#2962ff" });
plot(basis, { title: "Basis", color: "#ff9800" });
plot(lower, { title: "Lower", color: "#2962ff" });
fill(upper, lower, { color: "#2962ff", opacity: 0.08 });
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