GDINFO lists information about GEMPAK grid files.

INPUT PARAMETERS
 
    GDFILE    Grid file
    LSTALL    Full list flag
    OUTPUT    Output device/filename
    GDATTIM   Grid date/time
    GLEVEL    Grid level
    GVCORD    Grid vertical coordinate
    GFUNC     Scalar grid
 
 

PROGRAM DESCRIPTION
 
    GDINFO lists information about GEMPAK grid files.

    The user can specify a particular grid by making appropriate
    inputs for GVCORD, GLEVEL, GDATTIM, and GFUNC.

    GDATTIM allows several different input options.  If LIST is
    entered, a list of dates/times will be provided after running
    the program.  Upon choosing one of these times, a data search
    will be conducted.  Entering ALL will allow the program to match
    data pertaining to all of the dates/times in the file.

    GLEVEL also has several options unique to matching grid headers.
    Entering ALL will match data pertaining to all of the levels in
    the file.  If two levels are entered separated by a dash, this
    gives all of the levels within that range, including the bounding
    levels.  Entering MAN will match and copy all of the mandatory
    pressure levels into the output file.

    GVCORD controls the vertical coordinate search.  One vertical
    coordinate can be entered for the search, or ALL may be entered
    which will match all of the vertical coordinates in the file.

    GFUNC specifies the grid parameter name. If one parameter is
    entered, the program searches for that parameter only.  If ALL
    is entered, the program will match all of the parameters in its
    search.  Entering several parameters separated by semicolons
    will match those parameters only.

    The navigation information and grid analysis information will
    be listed.  If requested, the grids in the file will also be
    listed.  If LSTALL = YES, all the grids in the file will be
    listed.  If LSTALL = NO, only the navigation and analysis
    information will be displayed.

 
EXAMPLES
 
    1.  List all of the latest NGM Model information to the screen for
	the 500-millibar temperature in Kelvin from the 00 time period.

	GDFILE	 =  ngm
	LSTALL	 =  YES
	OUTPUT	 =  t
	GDATTIM  =  f00
	GLEVEL   =  500
	GFUNC    =  TMPK
	GVCORD   =  PRES

ERROR MESSAGES
 
    [GDINFO  -1]    Fatal error initializing TAE.
    [GDINFO  -2]    Fatal error reading TAE parameters.