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Hi Jess- > I've been working on creating netcdf files in idl. I was wondering what > format does idv prefer for the variable data, Our goal is to make a 3d > model. Should the dimensions of each variable be longitude, latitude, and > altitude or should it be similar to the METAR .csv file? lat/lon/alt dimesions would be best. You might want to take a look at the CF conventions which are specific to gridded data for the most part: http://www.cgd.ucar.edu/cms/eaton/cf-metadata/CF-1.0.html for hints on the variable names and units. Don Murray Ticket Details =================== Ticket ID: NJE-239274 Department: Support IDV Priority: Normal Status: Open