PROJ

PROJ (formerly PROJ.4) is a library for performing conversions between cartographic projections. The library is based on the work of Gerald Evenden at the United States Geological Survey (USGS), but since 2019-11-26 is an Open Source Geospatial Foundation (OSGeo) project maintained by the PROJ Project Steering Committee (PSC). The library also ships with executables for performing these transformations from the command line.

PROJ
Original author(s)Gerald Evenden
Developer(s)Frank Warmerdam
Stable release
9.3.1  / 1 December 2023 (1 December 2023)
Repository
Written inC++, C
PlatformCross-platform
TypeLibrary
LicenseMIT
Websiteproj.org
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