Dec 1, 2025 · PROJ is a generic coordinate transformation software that transforms geospatial coordinates from one coordinate reference system (CRS) to another. This includes cartographic …

Sep 15, 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 …

Dec 1, 2025 · The simplest way to install PROJ on Windows is to use the OSGeo4W software distribution. OSGeo4W provides easy access to many popular open source geospatial software …

Dec 1, 2025 · 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 it might be.

Dec 1, 2025 · Geodetic transformation PROJ can do everything from the most simple projection to very complex transformations across many reference frames.

Dec 1, 2025 · 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 applications or the C …

Dec 1, 2025 · 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 · If a proj-string does not contain +type=crs, then it is interpreted as a coordination operation / transformation. If creation of the transformation object fails, the function returns 0 and the …

Dec 1, 2025 · This section is devoted to the generic parameters that can be used on any projection in the PROJ library. Below is a list of PROJ parameters which can be applied to most coordinate …

Dec 1, 2025 · Generally PROJ will accept coordinate reference system descriptions in the form of WKT, WKT2 and PROJ strings. If you are able to describe your desired CRS in either of those formats …