# antvis/L7

🌎 Large-scale WebGL-powered Geospatial Data Visualization analysis engine.

Repository: https://github.com/antvis/L7
Canonical: https://ross.abutalabs.com/products/l7
Homepage: https://l7.antv.antgroup.com
Language: TypeScript
License: MIT
License Family: permissive
Topics: webgl, gis, data-visualization, mapbox, geospatial, map, 3d, geojson, antv, point, polygon, amap, javascript, maps
Last push: 2026-07-30T10:03:41+00:00

## Health v2 (maintenance only)
Score: 73/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 95, release rhythm 28, longevity 100
- inputs: {"age_days": 2842, "days_push": 34, "days_rel": 540, "gap_med": 62.5, "n_releases_24m": 3}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 4056, forks 657 (observed 2026-08-28T04:08:33.933358+00:00)

## What it is
L7 is an open-source WebGL-powered geospatial data visualization engine from AntV (Ant Group) for rendering large-scale 2D and 3D map visualizations in the browser. It supports point, line, polygon, heatmap, and raster layers with data-driven visual mapping over multiple basemaps like Mapbox and AMap.

## Use cases
- visualize millions of geo points on an interactive web map
- build 3D bar and arc maps for BI dashboards
- render heatmaps and grid aggregations of location data
- plot GeoJSON polygons and choropleth fills on a map
- create animated trajectory and route visualizations
- deploy offline/intranet map visualization apps

## When to choose
- you need high-performance rendering of large-scale geospatial data in the browser
- you want rich map chart types (bubbles, arcs, heatmaps, 3D fills) with flexible data mapping
- you need multi-basemap support including AMap for China compliance and Mapbox for international use

## When to avoid
- you need a full GIS desktop analysis tool rather than web visualization
- your project requires non-WebGL environments or server-side static map rendering
- you only need simple marker maps where a lighter library like Leaflet suffices

## Facets
- artifact type: library
- maturity: active
- function: data-visualization, geospatial, graphics, charts
- domain: data-visualization, web-development, frontend
- platform: browser, cross-platform
- tags: webgl, maps, geo, mapbox, amap, 3d-maps, heatmap, antv, typescript, geospatial, nodejs, web-server

## Member repositories
- antvis/L7 (main) score 73

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:33.933358+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:23:36.891810+00:00, confidence not recorded.
  - readme: https://github.com/antvis/L7 (fetched 2026-08-28T04:08:33.933358+00:00, sha 6cd9332a5c2e)
  - homepage: https://l7.antv.antgroup.com (fetched 2026-08-29T09:16:09.439187+00:00, sha d5ab7b1658d6)
- Data as of 2026-08-30T08:39:29.467469+00:00.