trlib /

Filename Size Date modified Message
46 B
Added tag v1.0 for changeset d2be12571cd4
83 B
Added cmake setup files to root-dir and TR_SRC.
1.3 KB
updated due to change in FO: fo_g_tr
852 B
Added ISC/OPenBSD licence to top of all .c/.h files
711 B edited online with Bitbucket
28.2 KB
State-action table desciption
457 B
Added makefile
1.6 KB
def_epsg changes
55.6 KB
work in progress
11.5 KB
Added a datum alias to def_shp, started adding support for +proj=merc in proj4_to_mlb.
326 B
GRIM is fully functional
96.7 KB
stuff - corrected a few things. Works, but still need to debug differences in ctc...
3.3 KB
Modularisation, removing the utils directory


trlib is the transformation library originating at the Danish Geodetic Institute, GI, in the 1960s. It includes official transformations for Danish, Faroese and Greenlandic reference systems.

The library is declared final at version 1.1

Version 2.0, also present in the code base is an abandoned “future” version.

trlib functionality is currently being reimplemented as part of the (much more widespread) PROJ.4 library.

Also, see for some initial discussions specificly targeting preparations for trlib reimplementation.

Comments and requests regarding trlib and KMSTrans2 may be sent to