H2GIS Documentation

Welcome on the H2GIS’s documentation, a spatial extension for the H2 database engine.

What is H2GIS?

In a nutshell: H2GIS is to H2 as PostGIS is to PostgreSQL.

H2GIS adds support for:

• (MULTI)POINT, (MULTI)LINESTRING and (MULTI)POLYGON types

• the functions specified by the OpenGIS Simple Features Implementation Specification for SQL

• additional spatial functions we develop, including our graph analysis package H2Network

H2GIS in action

H2GIS includes nearly 200 functions. The following is just a small sample of what H2GIS has to offer:

Buffer
Sky View Factor
ISOvist

Why using H2GIS?

• Free and open-source (LGPL v3.0)

• Standalone: no installation or configuration needed

• Very lightweight (less than 15mb once unzipped)

• Cross-platform

• Easy to embed in (mobile) apps

• Simple Feature SQL compliant

• Made by french public researchers from CNRS

Download the last version

You can download the last release of H2GIS here.

Get help

If you get stuck or just have a question, please fill an issue on our GitHub repo.

Authors

H2GIS is leaded by scientists and engineers in GIS and computer science from CNRS within the French Lab-STICC research laboratory (DECIDE team of Vannes). H2GIS is funded by public research projects.

H2GIS is also actively supported by the french UMRAE laboratory, which contribute to code and the documentation.

Core team

• Erwan Bocher : Project leader, dev & GIS guru (CNRS - Lab-STICC)

• Nicolas Fortin : geo-contaminated dev expert (UGE - UMRAE)

• Gwendall Petit : GIS expert, in charge of user-side / documentation (UGE - UMRAE)

You can contact the team through GitHub, or by email at info at h2gis dot org

Former contributors

Sylvain Palominos, Adam Gouge, Mireille Lecoeuvre, Alexis Guéganno

Acknowledgements

The H2GIS team would like to extend its warmest thanks to:

• Thomas Mueller, Noel Grandin and Evgenij Ryazanov from the H2 database community

• Martin Davis from the JTS Topology Suite community

• Michaël Michaud from IGN and OpenJump community, for creating JTransfoCoord, the father of CTS used to manage projections in H2GIS

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Documentation

Getting started

• Quick-start guide
• Data management
• Drivers
• Changelog for v2.2.5

Geometry 2D functions

• Affine transformations
• Convert geometries
• Create geometries
• Edit geometries
• Linear referencing
• Measures
• Operators
• Predicates
• Process geometries
• Projections
• Properties
• Trigonometry
• Clustering

Geometry 3D/4D functions

• Convert geometries
• Create geometries
• Edit geometries
• Measures
• Properties
• Topography
• Triangulation

System functions

• System

Applications

• H2Network

For developers

• Spatial JDBC
• Custom function aliases
• Embedded database