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GEOS - Geometry Engine, Open Source

The official GEOS web site is now https://libgeos.org
This site is now read-only and new issues should be filed at GitHub.

License

GEOS is available under the terms of GNU Lesser General Public License (LGPL).

Capabilities

Spatial Model and Functions

  • Geometries: Point, LineString, Polygon, MultiPoint, MultiLineString, MultiPolygon, GeometryCollection
  • Predicates: Intersects, Touches, Disjoint, Crosses, Within, Contains, Overlaps, Equals, Covers
  • Operations: Union, Distance, Intersection, Symmetric Difference, Convex Hull, Envelope, Buffer, Simplify, Polygon Assembly, Valid, Area, Length,
  • Prepared geometries (pre-spatially indexed)
  • STR spatial index
  • OGC Well Known Text (WKT) and Well Known Binary (WKB) encoders and decoders.

API Features

  • C++ API (will likely change across versions)
  • C API (provides long-term ABI stability)
  • Thread safe (using the reentrant API)

Download

See https://libgeos.org/usage/download/

Build and Install

CI Status

See https://libgeos.org/development/ci_status/

Source

No longer supported

Binaries

Tools

Development

Bug Reporting

Report bugs using GitHub issues.

When submitting bugs caused by particular geometries, you must submit the geometries that cause the failure, preferably in hex-encoded WKB, so that we can re-produce the failure cases.

Community

See https://libgeos.org/development/

Features

Governance

See https://libgeos.org/development/psc/

Documentation and Other Information

Wiki / Trac Information

Last modified 12 days ago Last modified on Nov 24, 2021, 4:01:04 PM

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