# locationtech/jts

The JTS Topology Suite is a Java library for creating and manipulating vector geometry.

Repository: https://github.com/locationtech/jts
Canonical: https://ross.abutalabs.com/products/jts
Language: Java
License: NOASSERTION
License Family: other
Topics: jts-topology-suite, jts, geometry, geometry-algorithms, geometry-library, java, java-library, computational-geometry, gis, ogc, ogc-wkt, geometric-algorithms, triangulation, voronoi
Last push: 2026-08-13T21:48:56+00:00

## Health v2 (maintenance only)
Score: 66/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 97, release rhythm 8, longevity 100
- inputs: {"age_days": 3873, "days_push": 20, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2227, forks 474 (observed 2026-08-28T04:06:28.811785+00:00)

## What it is
The JTS Topology Suite is a Java library for creating and manipulating vector geometry, providing a comprehensive set of geometry algorithms, OGC WKT parsing, and spatial operations. It also includes a TestBuilder GUI application for visualizing geometry and JTS functions.

## Use cases
- compute intersections and unions of polygons in Java
- parse and write OGC WKT geometry strings
- perform spatial predicates like intersects and contains
- build Voronoi diagrams and Delaunay triangulations
- buffer and simplify vector geometries
- validate and clean GIS geometry data

## When to choose
- you need robust 2D vector geometry operations on the JVM
- you're building GIS or mapping software in Java
- you need OGC-compliant geometry models and WKT I/O
- you want a well-tested, widely ported geometry library (GEOS, NetTopologySuite are ports)

## When to avoid
- you need 3D geometry processing
- you're working outside the JVM ecosystem (use GEOS or NetTopologySuite instead)
- you need raster or imagery processing rather than vector geometry

## Facets
- artifact type: library
- maturity: stable
- function: geospatial, math, parser
- domain: -
- platform: jvm, cross-platform
- tags: computational-geometry, vector-geometry, gis, ogc-wkt, triangulation, voronoi, topology, geospatial, maps, algorithms

## Member repositories
- locationtech/jts (main) score 66

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:28.811785+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 2026-08-30T02:44:51.472598+00:00, confidence not recorded.
  - readme: https://github.com/locationtech/jts (fetched 2026-08-28T04:06:28.811785+00:00, sha 174bb72eb53e)
- Data as of 2026-08-30T08:39:29.467469+00:00.