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- PROJ — PROJ 9. 6. 2 documentation
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 geodetic transformations PROJ is released under the X MIT open source license
- Installation — PROJ 9. 6. 2 documentation
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 get started if this is your first time using PROJ More advanced users may want to compile the software themselves Installation from package management systems
- Download — PROJ 9. 6. 2 documentation
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 information on how to get pre-built packages of PROJ
- Quick start — PROJ 9. 6. 2 documentation
A proj-string describes any transformation regardless of how simple or complicated it might be The simplest case is projection of geodetic coordinates This section focuses on the simpler cases and introduces the basic anatomy of the proj-string
- Geodetic transformation — PROJ 9. 6. 2 documentation
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 limited, framework for doing geodetic transforms in PROJ
- FAQ — PROJ 9. 6. 2 documentation
A coordinate reference system (CRS) can in PROJ be described in several ways: As PROJ strings, Well-Known Text (WKT) and as spatial reference ID's (such as EPSG codes) Generally, WKT or SRID's are preferred over PROJ strings as they can contain more information about a given CRS
- Using PROJ — PROJ 9. 6. 2 documentation
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 API that is a part of the software package
- Cartographic projection — PROJ 9. 6. 2 documentation
The foundation of PROJ is the large number of projections available in the library 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 definitions
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