GRIB2NAV

Lists the navigation parameters necessary for entering new GRIB2 datasets.

Formats

GRIB2NAV GRIB2Filename

Parameters

GRIB2Filename

fully qualified path of a valid GRIB2 file on your system

Remarks

When adding a new GRIB2 dataset that accesses data in the MySQL database, the dataset's navigation parameters must be added into the ~mcidas/data/grib2NavLookup.txt file. These navigation parameters can be listed by the GRIB2NAV command.

Example output is:

Nav parameters for message 66, field 0 are NAM, 6, -4564482,
        2089981, 20318, 950000, 250000, 250000

The fields are defined as follows:

Field 1 (NAM in this example) is the grid source name (4 character maximum)
Field 2 (6 in this example) is the projection type (1 and 4 are Mercator, 2 is Polar Stereographic, 6 is Lambert Conformal)
Fields 3-8 (-4564482, 2089981, 20318, 950000, 250000, 250000 in this example) are the calculated navigation parameters for the grib2 file

Example

GRIB2NAV sampleGFS.grb2

This command lists the navigation parameters of the sampleGFS.grb2 GRIB2 file, which can then be entered in the grib2NavLookup.txt file. See Configuring Additional GRIB2 ADDE Datasets for more information.

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