http://disqus.com/by/apraca/enTue, 07 Apr 2009 13:44:04 -0000http://geospatial.nomad-labs.com/2009/03/03/what-is-a-sdss-and-how-is-it-different-from-a-gis/#comment-7942854<p>Hi and thanks for the nice and helpfull information. If I understood correctly what you said about domain specific data models, they derive from geodata models.<br>As I am a newbie in such field I would like to ask you some questions: 1) What are the best known open source repositories of geodata (you had mentioned Shapefiles) ? and, 2) How can I optimize such data? Are there any software tools to do it? How can I define my optimization criteria using such tools?</p><p>Thanks a lot and best regards from Brazil.<br>Alexandre </p>apracaTue, 07 Apr 2009 13:44:04 -0000