Welcome to Proj4Net

Proj4Net is a .Net library to transform point coordinates from one geographic coordinate system to another, including datum transformations.

Proj4Net is a direct port of Proj4J

The core of this library is a port of the PROJ.4 C library. The projection algorithms, concepts and coordinate system definitions are all taken directly from PROJ.4. These are wrapped in a C# class model which follows standard Java conventions and OO best practices.

Documentation

• The PROJ.4 documentation is the best reference for details of the coordinate system specification language, projection algorithms and supported parameters.
• the Version History lists the evolution of features of the library
• the Javadoc describes the API

Discussion Forum

A discussion forum is available for users and developers of Proj4Net.

• Direct link to the discussion forum.

Development

• SVN repository: http://proj4net.codeplex.com/SourceControl/list/changesets.
• Browse source here.

Bug Tracking

• Submit a new bug report (you need to login with a CodePlex account.)
• List Open Issues

License