6 days ago · PROJ is a generic coordinate transformation software that transforms geospatial coordinates from one coordinate reference system (CRS) to another. This includes cartographic …

Dec 1, 2025 · Download Here you can download current and previous releases of PROJ. We only supply a distribution of the source code and various resource file archives. See Installation for …

3 days ago · Installation These pages describe how to install PROJ on your computer without compiling it yourself. Below are guides for installing on Windows, Linux and Mac OS X. This is a good place to …

3 days ago · Quick start Coordinate transformations are defined by, what in PROJ terminology is known as, "proj-strings". A proj-string describes any transformation regardless of how simple or complicated …

3 days ago · Using PROJ The main purpose of PROJ is to transform coordinates from one coordinate reference system to another. This can be achieved either with the included command line …

3 days ago · About PROJ is a generic coordinate transformation software that transforms geospatial coordinates from one coordinate reference system (CRS) to another. This includes cartographic …

Mar 13, 2026 · In PROJ, two frameworks for geodetic transformations exists, the PROJ 4.x/5.x / cs2cs / pj_transform() framework and the transformation pipelines framework. The first is the original, and …

3 days ago · What happened to PROJ.4? Who uses PROJ ? Which file formats does PROJ support? The command line applications that come with PROJ only support text input and output (apart from …

3 days ago · a PROJ string, like "+proj=longlat +datum=WGS84". When using that syntax, the axis order and unit for geographic CRS will be longitude, latitude, and the unit degrees.

The ../share/proj/ and its contents are found automatically at run-time if the installation respects the build structure. That is, the binaries and proj.dll / libproj.so are installed under ../bin/ or ../lib/, and resource …