Which way does it get flipped? Most NetCDF files will import via r.in.gdal correctly, but they are displayed as (from L->R) as 0->180E/180W->0. This is the way that most climate model files are created and then stored. This presents some problems in displaying vector overlays (I've reported this to the bug tracker). There has been a problem in NetCDF files importing upside down. This fixed in the current version of GDAL AFAICT.
Michael On Jun 30, 2012, at 1:00 PM, <grass-user-requ...@lists.osgeo.org> wrote: > From: Marcello Gorini <gor...@gmail.com> > Subject: [GRASS-user] Correct import of a global grid (0E to 360E) to GRASS > (-180W to 180E). > Date: June 30, 2012 4:36:19 AM MDT > To: <grass-user@lists.osgeo.org> > > > Dear all, > > I am pretty sure this must be easy, but I just can't find the correct answer. > > My grid is a netcdf geographic grid that spans from 0E to 360E and from 90N > to -90S. > > I use r.in.gdal to import it, but it gets flipped since GRASS region spans > from -180W to 180E. > > How to do it right? > > Thanks in advance. > > Best regards, > Marcello. > > > > From: Daniel Lee <l...@isi-solutions.org> > Subject: Re: [GRASS-user] Correct import of a global grid (0E to 360E) to > GRASS (-180W to 180E). > Date: June 30, 2012 5:05:45 AM MDT > To: Marcello Gorini <gor...@gmail.com> > Cc: <grass-user@lists.osgeo.org> > > > Hi Marcello, > > It sounds like you're trying to import your map into the wrong coordinate > system. If you have the correct coordinate system of the NetCDF, you should > be able to define a location with that CRS using either the correct EPSG code > or a WKT string. If need be, you can always create a WKT string as well, > although I don't know how to do that. > > Best, > Daniel > -- > > B.Sc. Daniel Lee > Geschäftsführung für Forschung und Entwicklung > ISIS - International Solar Information Solutions GbR > Vertreten durch: Daniel Lee, Nepomuk Reinhard und Nils Räder > > Softwarecenter 3 > 35037 Marburg > Festnetz: +49 6421 379 6256 > Mobil: +49 176 6127 7269 > E-Mail: l...@isi-solutions.org > Web: http://www.isi-solutions.org > > _____________________ C. Michael Barton Visiting Scientist, Integrated Science Program National Center for Atmospheric Research & University Consortium for Atmospheric Research 303-497-2889 (voice) Director, Center for Social Dynamics & Complexity Professor of Anthropology, School of Human Evolution & Social Change Arizona State University www: http://www.public.asu.edu/~cmbarton, http://csdc.asu.edu
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