On Sun, May 8, 2011 at 12:58 AM, Lmhelp <[email protected]> wrote: > Hi Andrea, > > I am sorry for my late answer. > > You probably are right about EPSG:2154 though I am not a specialist... > > In the near future, I'll not be working anymore with these data. > Instead of French departments I'll need world states. > And actually... I don't know "where" I can get these data for free... do > you?
Try here, they have worldwide free vector data: http://www.naturalearthdata.com/ > But, yes indeed, you are totally right: "Knowing the exact spatial reference > system of your data is important, otherwise you don't really know what part > of the earth the data refers to." > So maybe, if it's not too much asking, could you advise me some good > literature about these issues? The Snyder would be the bible in the respect: http://www.amazon.com/Flattening-Earth-Thousand-Years-Projections/dp/0226767477/ref=sr_1_2?ie=UTF8&qid=1304868068&sr=8-2 Anyways, if you look for "map projection datum primer" on Google you'll find some useful introductory links Cheers Andrea -- ------------------------------------------------------- Ing. Andrea Aime GeoSolutions S.A.S. Tech lead Via Poggio alle Viti 1187 55054 Massarosa (LU) Italy phone: +39 0584 962313 fax: +39 0584 962313 http://www.geo-solutions.it http://geo-solutions.blogspot.com/ http://www.youtube.com/user/GeoSolutionsIT http://www.linkedin.com/in/andreaaime http://twitter.com/geowolf ------------------------------------------------------- ------------------------------------------------------------------------------ WhatsUp Gold - Download Free Network Management Software The most intuitive, comprehensive, and cost-effective network management toolset available today. Delivers lowest initial acquisition cost and overall TCO of any competing solution. http://p.sf.net/sfu/whatsupgold-sd _______________________________________________ Geoserver-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/geoserver-users
