# Gann Fan & Angles Gann Fan & Angles is an indicator on [Vela](https://vela.luxalgo.com/chart), our next-generation charting platform, written in Pine Script®. The classical nine-angle Gann fan with the scaling decision made explicit: the 1x1 is defined in price units per bar, derived from ATR at the anchor (length 14, multiplier 1) or set manually, so levels survive zoom and re-scaling. Auto swing anchoring over a 200-bar lookback, per-pair angle toggles, crossing alerts and an info panel showing the active unit and bracketing angles. - Indicator in the LuxAlgo Library, by LuxAlgo, published May 10, 2026. - Access: free. - Concepts: [Gann Fan & Angles](https://www.luxalgo.com/library/concept/gann-fan-and-angles/) (primary), [Gann Method](https://www.luxalgo.com/library/concept/gann-method/) - Open on Vela: https://vela.luxalgo.com/chart?pineScriptCodeId=j06sx0e926p4vhd4ufu65mnh - Page: https://www.luxalgo.com/library/indicator/gann-fan-and-angles/ **Gann Fan & Angles** projects the classical fan (8×1 down to 1×8 around the 1×1 balance line) from a swing anchor, and makes explicit the decision every fan needs: scale. Slopes here are defined as price units per bar, not screen degrees, so levels and alerts are identical however the chart is zoomed. The build implements [Gann angles](https://www.luxalgo.com/library/concept/gann-fan-and-angles/) with an ATR-derived unit by default, sampled at the anchor bar so the fan never drifts as volatility changes. ## How to Trade the Gann Fan & Angles? - **Price versus the 1×1**: holding above the balance line reads as strength in a rising fan, below as weakness. The panel states the side and alerts catch each crossing. - **Angle-to-angle progression**: when a fan line breaks, the next angle out becomes the working reference; the any-angle crossing alerts track the hand-off across enabled lines. - **Zone read**: the panel names the pair of angles bracketing price, a quick strength gauge. ## Gann Fan & Angles Settings - **Anchor Mode** (default Auto): the dominant swing in the lookback, or a chart-placed point; **Auto Swing Lookback** (default 200) sets the window. - **Fan Direction** (default Auto): rising from a low, falling from a high, or inferred. - **Manual Anchor Time / Manual Anchor Price** (defaults 01 Jan 2024 / 0.0): the manual pivot, editable after placement. - **Scale Mode** (default Auto (ATR)) with **ATR Length** (14) and **ATR Multiplier** (1.0): how many price units the 1×1 advances per bar. Raise the multiplier to steepen the whole fan. - **Manual Units per Bar** (default 1.0): a fixed rate for reproducible cross-chart geometry. - **Angles**: **1×1 (balance line)** (on), **2×1 & 1×2** (on), **3×1 & 1×3** (off), **4×1 & 1×4** (off), **8×1 & 1×8** (off). - **Angle Labels**, **Anchor Marker** and **Info Panel** (all on, panel Position Top Right) round out the display. ## Frequently Asked Questions ### Why doesn't the 1×1 sit at 45 degrees on my chart? It sits at 45° only when the chart zoom gives one price unit the same screen distance as one bar. Zoom and scale type change the on-screen slope but never the levels: the angle is a rate in units per bar. ### How does the fan differ from the Gann Box? The fan radiates fixed-rate angles from one pivot into the future; the [Gann Box overlay](https://www.luxalgo.com/library/indicator/gann-box/) subdivides a completed swing between two anchors in price and time. Trend trajectory versus internal structure of a finished range. ### Should I use the ATR scale or a manual unit? Auto (ATR) adapts the unit to the instrument so a fresh fan is usable immediately; manual suits traders who keep a fixed points-per-bar convention per market. Either way, tune the unit until past reactions spread across the fan instead of crowding one line. ## Related indicators - [Gann Box](https://www.luxalgo.com/library/indicator/gann-box/) (Gann Method): markdown at https://www.luxalgo.com/library/indicator/gann-box.md - [Volumetric Regression Heatmap](https://www.luxalgo.com/library/indicator/volumetric-regression-heatmap/) (Linear-regression Channel): markdown at https://www.luxalgo.com/library/indicator/volumetric-regression-heatmap.md - [Trendlines with Breaks](https://www.luxalgo.com/library/indicator/trendlines-with-breaks/) (Trendline): markdown at https://www.luxalgo.com/library/indicator/trendlines-with-breaks.md - [Trendline Breakout Navigator](https://www.luxalgo.com/library/indicator/trendline-breakout-navigator/) (Trendline): markdown at https://www.luxalgo.com/library/indicator/trendline-breakout-navigator.md - [FVG Channel](https://www.luxalgo.com/library/indicator/fvg-channel/) (Parallel Channel): markdown at https://www.luxalgo.com/library/indicator/fvg-channel.md - [Gann Square of 9 Vibration Levels](https://www.luxalgo.com/library/indicator/gann-square-of-9-vibration-levels/) (Gann Square of 9): markdown at https://www.luxalgo.com/library/indicator/gann-square-of-9-vibration-levels.md - [Trendlines with Breaks Oscillator](https://www.luxalgo.com/library/indicator/trendlines-with-breaks-oscillator/) (Trendline): markdown at https://www.luxalgo.com/library/indicator/trendlines-with-breaks-oscillator.md - [Zig Zag Channels](https://www.luxalgo.com/library/indicator/zig-zag-channels/) (Parallel Channel): markdown at https://www.luxalgo.com/library/indicator/zig-zag-channels.md --- Source: https://www.luxalgo.com/library/indicator/gann-fan-and-angles/ (LuxAlgo Library). Free to use with attribution: https://www.luxalgo.com/library/license/