PROJ.4 is a cartographic projections and datum shifting library written in C. PROJ.4 includes support for many (100 ) projections, including Transverse Mercator and Lambert Conformal Conic.
Included is a command line program for reprojecting points. It was originally written by Gerald Evenden of the USGS, and is in active use in various commercial and freeware software.
What's New in This Release:
· This release reworks pj_transform() to avoid applying ellipsoid to ellipsoid transformations as a datum shift when no datum info is available.
· It avoids applying "change of ellipsoid" during datum shifting based on ellipsoids getting changed to spheres for spherical projections.
· It has been upgraded to EPSG 6.13.