You're probably missing some params in the epsg definition of 3003. it should look like this:
+proj=tmerc +lat_0=0 +lon_0=9 +k=0.999600 +x_0=1500000 +y_0=0 +ellps=intl +units=m +no_defs +towgs84=-104.1,-49.1,-9.9,0.971,-2.917,0.714,-11.68 +to +proj=latlong +datum=WGS84 the important bits are +towgs84=-104.1,-49.1,-9.9,0.971,-2.917,0.714,-11.68 Cheers, Umberto On Tue, Jul 6, 2010 at 2:44 PM, Kiks <enrico.o...@gmail.com> wrote: > > Ok, thanks, now I manage in overlapping layers, but I still have a little > accurance problem: it seems that there are around 20 meters of distance > between the same point in google and in my maps. > > > Phil Scadden wrote: >> >> >>> but the google satellite map is not beeing reprojected... >>> >> As far as I know, you can reproject your vector features on the fly (say >> from 3003 to 900913) but you cannot >> reproject imagery of any sort on the fly. If you use google imagery, you >> are stuck with getting everything else >> into that projection. >> -- >> Phil Scadden, Senior Scientist GNS Science Ltd 764 Cumberland St, >> Private Bag 1930, Dunedin, New Zealand Ph +64 3 4799663, fax +64 3 477 >> 5232 >> >> Notice: This email and any attachments are confidential. If received in >> error please destroy and immediately notify us. Do not copy or disclose >> the contents. >> >> _______________________________________________ >> Users mailing list >> Users@openlayers.org >> http://openlayers.org/mailman/listinfo/users >> >> > -- > View this message in context: > http://osgeo-org.1803224.n2.nabble.com/Google-EPSG-900913-and-Italian-EPSG-3003-tp5248120p5260095.html > Sent from the OpenLayers Users mailing list archive at Nabble.com. > _______________________________________________ > Users mailing list > Users@openlayers.org > http://openlayers.org/mailman/listinfo/users > _______________________________________________ Users mailing list Users@openlayers.org http://openlayers.org/mailman/listinfo/users