Lee wrote: > I'm trying to import a NetCDF file from the WRF weather forecast model > with r.in.gdal, but I can't get it to georeference. Instead I end > up with a x,y coordinate system of rows and columns. The file > georeferences fine in a number of other weather graphics programs.
Hi Lee, see http://grasswiki.osgeo.org/wiki/NetCDF http://www.gdal.org/frmt_netcdf.html can you get the WRF data in GRIB format instead of NetCDF? I'm doing that and it is working well. (note for GRIB you should have GDAL version 1.9 or newer to avoid a bug) if not, try using gdal_translate to extract the subband to a geotiff or other intermediate format before loading into grass. if you can get r.in.gdal working directly, also consider r.external to avoid a zillion maps everywhere on the disk. see also ncdump and I've got a small program here called ncreformat.c that extracts wrf NetCDF to an ascii file. It might be from an old WRF code distribution? Hamish ps- see also the d.barb addon module for GRASS 6. Also there might be some discussion in the mailing list archive about smoothing isobar lines created with r.contour using the v.generalize module: you need to be careful that the tight inner lines don't pinch closed and that the fine eye of a storm doesn't get discarded with discarded small noise loops. if it's not online maybe I'll have some private notes somewhere I could try to dig out. _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
