Actually, NVIZ DOES handle such maps OK. You have to mess with the z-exaggeration setting a bit, but you can display latlon maps in 2.5D. A real plus for GRASS over other GIS and visualization systems.
Michael On 8/23/07 9:32 AM, "Miriam España" <[EMAIL PROTECTED]> wrote: > > Hello again, > > ok, I understand that it's not the appropriate projection for the zone, but > it's part of my problem: my objective it's to visualize a raster3d in nviz, > but the r3 map it's in Lambert Conic conformal, and it seems like Nviz > can't represent maps in locations differents from XY or UTM (respect UTM, > I'm not sure, anybody can confirm this?). > > It's for this reason... any suggestion? > > Thanks for all, > > Miriam > > > Michael Barton wrote: >> >> A UTM projection is not really appropriate for all of North America, which >> crosses multiple UTM zones. It is only accurate within a single zone. Try >> a >> different projection that is appropriate for such large areas (e.g., >> Lambert >> Conformal Conic). >> >> Michael >> >> >> On 8/23/07 2:01 AM, "Miriam E. A." <[EMAIL PROTECTED]> wrote: >> >>> >>> Hello everybody, >>> >>> I'm triying to reproject a map of north america form llc to utm, but >>> Grass >>> reports an error about input map is outside output region. >>> >>> I choose zone 16N as center of the map, defining a region as the next, in >>> the UTM Location: >>> >>> GRASS 6.3.cvs (UTM):~ > g.proj -p >>> -PROJ_INFO------------------------------------------------- >>> name : UTM >>> datum : nad27 >>> towgs84 : -22.000,157.000,176.000 >>> proj : utm >>> ellps : clark66 >>> a : 6378206.4000000004 >>> es : 0.0067686580 >>> f : 294.9786982000 >>> zone : 16 >>> -PROJ_UNITS------------------------------------------------ >>> unit : meter >>> units : meters >>> meters : 1.0 >>> >>> g.region n=10000000 s=0 e=10000000 w=0 >>> >>> to cover the greatest area possible. >>> >>> Does grass support regions crossing various zones UTM? And, UTM considers >>> north as 0 to avoid negative coords in the north hemisphere, but in GRASS >>> south must be 0... >>> >>> Maybe i'm very wrong. >>> >>> Thanks for your attention and for the help (in this and previous emails >>> and irc). >>> >>> Miriam >> >> __________________________________________ >> Michael Barton, Professor of Anthropology >> Director of Graduate Studies >> School of Human Evolution & Social Change >> Center for Social Dynamics & Complexity >> Arizona State University >> >> phone: 480-965-6213 >> fax: 480-965-7671 >> www: http://www.public.asu.edu/~cmbarton >> >> >> _______________________________________________ >> grassuser mailing list >> [email protected] >> http://grass.itc.it/mailman/listinfo/grassuser >> >> __________________________________________ Michael Barton, Professor of Anthropology Director of Graduate Studies School of Human Evolution & Social Change Center for Social Dynamics & Complexity Arizona State University phone: 480-965-6213 fax: 480-965-7671 www: http://www.public.asu.edu/~cmbarton _______________________________________________ grassuser mailing list [email protected] http://grass.itc.it/mailman/listinfo/grassuser
