Help using GFS GRIB files

[Brian Gaze]

I've generated control and descriptor files successfully for GRIB files downloaded from NOAA for the GFS forecasting model. I'm able to open the ctl file and query file to see the list of variables available. This looks ok. However, when I set the lat, lon, level and time and then try to run a d variable_name no plot is generated. An error message is instead returned.

Is there sometihng else I need to be doing from within GRADS before being able to generate images from these datasets? Does anyone know if there are examples of actually doing this?

Thanks

Brian

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