Apr 28, 2026 · PROJ is a generic coordinate transformation software that transforms geospatial coordinates from one coordinate reference system (CRS) to another. This includes cartographic …

PROJ is a generic coordinate transformation software, that transforms coordinates from one coordinate reference system (CRS) to another. This includes cartographic projections as well as geodetic …

The string format that PROJ uses to describe coordinate systems and transformations, proj string or proj.4 string, is widely used beyond PROJ proper. A wide variety of ports or bindings in other …

Apr 10, 2026 · A PROJ 9.8.1 release addressing this issue is planned in a near future. In the meantime, users affected by these problems are encouraged to report any broken use cases that have not yet …

Dec 1, 2025 · See Installation for information on how to get pre-built packages of PROJ. Documentation in PDF and zipped HTML can be downloaded using the flyout menu on the left side of the browser …

PROJ is a generic coordinate transformation software that transforms geospatial coordinates from one coordinate reference system (CRS) to another. This includes cartographic projections as well as …

Apr 28, 2026 · 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 …

Apr 28, 2026 · I.e. a proj-string consists of a projection specifier, +proj, a number of parameters that applies to the projection and, if needed, a description of a datum shift.

Apr 28, 2026 · proj and invproj perform respective forward and inverse conversion of cartographic data to or from cartesian data with a wide range of selectable projection functions.

Apr 28, 2026 · While originally developed as a tool for cartographic projections, PROJ has over time evolved into a powerful generic coordinate transformation engine that makes it possible to do both …