Hi Dave, You are right that the file does not have any projection information embedded in it and I don't know what it should be. I am obtaining this data from climatologist who are using WRF model to generate different climate change scenarios. They are not much familiar with ArcGIS so I am trying to figure out what the problem is with ArcGIS.The data actually is hourly precipitation for the United States and I am basically trying to overlay this information with US map (shapefile) in the ArcGIS platform to do further analysis.
I could import it as a collection of points using Make NetCDF feature layer as you suggested but I am now more inclined to the approach you suggested later. Can I adopt the approach of redefining the axes if the data are in lambert conformal conic projection? and if the answer is yes, how would I do so? Thanks! Sami On Thu, Apr 14, 2011 at 11:17 AM, David Blodgett <[email protected]> wrote: > Your file appears to already be in lat/lon with no datum specified do you > know what the data should be? > > Since it is curvilinear, ArcGIS won't read it as gridded data. Arc only > really operates on "raster" grids.You have to import it as a collection of > points using "Make NetCDF Feature Layer". > > If you know the original projection of the data, you could redefine the > axes in a way that the data would be a raster grid. There are some > complications importing raster grids not in lat/lon coordinates into ArcGIS > though. If you think you want to try this approach, contact me and I can > give more detail. > > Dave Blodgett > Center for Integrated Data Analytics (CIDA) > USGS WI Water Science Center > 8505 Research Way Middleton WI 53562 > 608-821-3899 | 608-628-5855 (cell) > http://cida.usgs.gov > > > On Apr 14, 2011, at 8:10 AM, Sami Khanal wrote: > > Dear all, > > I ran into a problem while analyzing netCDF data generated by WRF model. > My goal is to be able to convert the curvilinear grid structure in netCDF > file to some other grid structure (i.e. to change the projection system into > WGS1984 or some other projection). > > My ultimate goal is to be able to overlay grid converted from netCDF file > to other grid in platform like ArcGIS. > > I have also attached one of the netcdf file I am trying to work with. > > I would really appreciate if you could provide me some information about > these issues. > > Thank you very much for your help! > > Best > Sami > <test32-2.nc>_______________________________________________ > CF-metadata mailing list > [email protected] > http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata > > >
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