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Hi Mark- > Currently we are looking into using IDV to visualize weather data from MM5, > LAPS and hopefully RAMS. We hope to visually compare the forecasted results > to the actual weather data. Okay, thanks for the info. > Thanks for all of the help; the NCML file helped me view the MM5 surface > data. When I use the NCML file in this way will it change the data or does it > just provide the needed parameters to IDV? Also, can I use another NCML file > to allow me to view the data in the MM5 .fua file(the .fua is the actual data > for a region; the where as the .fsf is only the surface data)? It's just a wrapper so it makes the changes that are defined in the NCML file. You can use it to overwrite data, but here we are just adding/correcting metadata. You could create another NCML file for fua file. If it's the same structure, you could just copy the one I sent and change the filename. At this point, there's no way in the IDV to associate an NCML template to a group of files - the NCML file has to reference the file it modifies. If you need help generating an NCML file for the fua file, send me a sample file. Don Murray Ticket Details =================== Ticket ID: XNA-384239 Department: Support IDV Priority: Normal Status: Open