Re: [Geotools-gt2-users] Projection management on GeoTools

[Martin D. <mar...@ge...>]

Hello Sylvain

Sylvain GRELLET a écrit :
> My question is the following :
> - to which extent is GeoTools2 using Proj.4 librairie ? Proj.4 web site 
> (http://trac.osgeo.org/proj/) is citing GeoTools as a Related Ressource.

Proj.4 is not used at all in the sense that GeoTools has no dependency toward 
the Proj.4 library. However most projection formulas are port of Proj.4 C/C++ 
code to Java, licenced under LGPL with Frank Wamardam permission. Note however 
that the Java code has been refactored in various way with time, so when 
comparing the C/C++ and Java codes their relationship may not be obvious.

	Martin