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HOME > Monitoring_and_Data > Oceanic and Atmospheric Data > Reanalysis: Atmospheric Data > wgrib2-types
 

wgrib2: init, inv, out, misc

Options

Each option on the wgrib2 command line is translated into a subroutine call by wgrib2. In some sense, the command line is actually a simple program as it describes the order of the subroutine calls. As with most languages, the order is important and subroutines can be called more than once. Wgrib2 handles the subroutine calls differently from most languages. First, there is an init phase, each subroutine is called in order with mode = INIT. This allows the subroutines to do the needed initialization procedures such as opening files and initializing variables. Then there is the data phase. Each subroutine is called in order with a pointer to the current grib message. Finally there is the cleanup phase. Each subroutine is called with mode = CLEANUP.

Wgrib2 has four classes of options: init, inv, out and misc.

type when run uses
init run only on init phase used for setting flags
inv run on init, data and cleanup phases writes to the stdout (inventory)
out run on init, data and cleanup phases writes to files
misc run on init, data and cleanup phases none of the above


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Page last modified: May 15, 2005
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