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 …

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 …

6 days ago · 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 …

6 days ago · Every projection in PROJ is identified by a shorthand such as merc in the above example. By using the above projection definition as parameters for the command line utility proj we can …

6 days ago · Geodetic transformation PROJ can do everything from the most simple projection to very complex transformations across many reference frames.

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 …

6 days ago · 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 system …

6 days ago · Projections are coordinate operations that are technically conversions but since projections are so fundamental to PROJ we differentiate them from conversions. Projections map the spherical …

6 days ago · © Copyright 1983-2025, PROJ contributors. Last updated on 16 Dec 2025. Built with Sphinx using a theme provided by Read the Docs.

6 days ago · 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.