Christian Tiso wrote: > Thank you markus, you're right, there's no datum > definition: > > GRASS 6.3.0 (fassaGB):~ > g.proj -w > PROJCS["Transverse Mercator", > GEOGCS["international", > DATUM["unknown", > > SPHEROID["International_1924",6378388,297]], > PRIMEM["Greenwich",0], > UNIT["degree",0.0174532925199433]], .... > but this is beacause I created a new location from the GUI > start panel of GRASS by choosing the "EPSG code" > button and selectiong the 3003 code which should be the one > related to the GaussBoaga, Rome 1940 Monte Mario > projections. > > Where am I wrong? It is not possible to create such a new > location only by choosing the EPSG code?
The /usr/share/proj/epsg file's version of 3003 only defines the 1924 International ellipsoid, not the datum. so that's all grass knows about: # Monte Mario / Italy zone 1 <3003> +proj=tmerc +lat_0=0 +lon_0=9 +k=0.9996 +x_0=1500000 +y_0=0 +ellps=intl +units=m +no_defs <> try http://www.epsg-registry.org/ & go to "retrieve by code". is "Monte Mario" aka "Rome 1940" datum? if so the epsg file may be faulty. (don't know; ask on the proj4 mailing list) grass's datum table has rome40: # Rome 1940 (Sardinia Parameters) rome40 "Monte_Mario" international dx=-225 dy=-65 dz=9 so you could run g.setproj in the PERMANENT mapset, choosing only to change the datum and set it that way, or hack the PROJ_INFO file manually. Hamish _______________________________________________ grass-dev mailing list grass-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-dev