Martin Desruisseaux wrote: > 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.
Sylvain, I would add that GeoTools is listed as a related resource because the coordinate transformation part of GeoTools performs a similar role to PROJ.4, not because there was any implication of derivation from, or use of PROJ.4. Best regards, -- ---------------------------------------+-------------------------------------- I set the clouds in motion - turn up | Frank Warmerdam, [email protected] light and sound - activate the windows | http://pobox.com/~warmerdam and watch the world go round - Rush | Geospatial Programmer for Rent ------------------------------------------------------------------------------ Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H _______________________________________________ Geotools-gt2-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
