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Charles, I don't know if you can open and search 84 files very fast. The only other solution is to create a temporary file and use gdmod to copy selected grids (eg, not all your grids which would be very large) which you would expect to use for time series in a single file. If I can thing of a better solution, I'll let you know. Steve Chiswell Unidata User Support >From: "Charles J. Alonge" <address@hidden> >Organization: NASA - Goddard Space Flight Center >Keywords: 200509152013.j8FKDbnX019190 >Support, > > I am working with output from the operational ETA-12km on the native >grids. I was able to successfully create templates for the data in the >file datatype.tbl. The templates work well in GDPROF and GDPLOT2, >however, when I try GDSTER, it takes a quite a while to draw a trace of >the entire forecast (F00-84 at an hourly interval). Is there anyway to >expedite this process? I would combine the individual gempak grid files >into one large file, but that consumes a great deal of space of which I >am already running low on (grid files are about 220mb for each forecast >file). Any assistance you can provide me will be greatly appreciated. > >Thank you, >Charles > >-- > >Charles J. Alonge >NASA Goddard Space Flight Center - SAIC >Hydrological Sciences Branch >NASA-GSFC Mail Code 614.3 >Greenbelt, MD 20771 > >Office: Building 22, Room 008 >Phone: (301) 286-8272 >Fax: (301) 286-8624 >Email: address@hidden > -- NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.