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Charles, GEMPAK has 3 parameters that determine the maximum grid size that can be stored and used in computations. Your 606x1067 grid is 646602 points. Defined in $GEMPAK/include are: LLMXTG which is the maximum grid that can be stores, and is 750,000 by default. LLMXGD is the maximum size of a grid used in computations, which is 400,000. LLMDGG is the amount of memory available for computations (eg your grid size times the number of grids needed for a computation, default is 2504000). Since you grid exceeds LLMXGD, you can use the IJSKIP parameter to sample the number of points. You can also subset the GAREA to use fewer grid points. If your computation is a complicated function, you may have to do it in pieces if your number of grid points times the number ofgrids used exceeds LLMDGG. For example, if your subarea was halh of your points (323301), then if your computation requires more than 7 grids (each parameter used in the calculation and output grid), then you would need todo do the calculation in pieces (gddiag would be useful there). The alternative would be to build gempak with LLMXGD larger for your entire grid, but this always has consequences in the LLMDGG heap usage. Steve Chiswell Unidata User SUpport >From: "Charles J. Alonge" <address@hidden> >Organization: NASA - Goddard Space Flight Center >Keywords: 200409301508.i8UF8cUE028623 >Hello Support, > > I'm plotting data from NCEP'S ETA Model on the native Arakawa-E grid >(606x1067). Whenever I attempt calculations with the data in GDPLOT or >GDCNTR I receive an error "Internal Grid List Full". How can I go about >resolving this problem? > >Thanks for your consideration, >Charles > >-- > >Charles J. Alonge >NASA Goddard Space Flight Center - SAIC >Hydrological Sciences Branch >NASA-GSFC Mail Code 974.1 >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.