Hi Sören Gebbert <[email protected]> writes:
> Hi Rainer, > > > 2013/5/22 Rainer M. Krug <[email protected]> > >> Hi >> >> I am doing spatio-temporal simulations with R and GRASS and IO am >> thinking about using a temporal GIS database to store the resulting >> raster layers in. >> >> But I have a few questions about the temporal GIS database: >> >> 1) If I register a raster map in a temporal GIS database via r.register, >> can I delete the original raster map and the info is stored in the >> temporal GIS database? >> > > Yes, the info is still stored in the temporal database, unless you call > t.support with -m option. > > >> >> 2) If 1) is possible, can I extract the raster layer again from the >> temporal GIS database? >> >> No, that's not possible since only the spatio-temporal extent and some > metadata is stored in the temporal database. The map data itself will not > copied. > OK - that is the info I needed. In this case, the spatio temporal database is not an option for me for archiving. > >> 3) Summarizing: Is the temporal GIS database a good archiving place for >> the layers I create during the simulation? >> > > If you think that GRASS is a good archiving place then yes. But be aware > that a large temporal database with lots of maps with slow down the > temporal database access. If you want to store >10.000 maps, then you > should use postgresql as temporal database backend. I was thinking about this - but seting up a postgresql server on a cluster and to maintain it (or bug the administrator to do it) as I am the only one using it, is not an option at the moment - but I'll keep it definitely in mind. Thanks a lot, Rainer > > > Best regards > Soeren > > >> >> Thanks, >> >> Rainer >> >> >> -- >> Rainer M. Krug >> >> _______________________________________________ >> grass-user mailing list >> [email protected] >> http://lists.osgeo.org/mailman/listinfo/grass-user >> >> -- Rainer M. Krug
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