Read_GRiB ("read_grib") is a World Meteorological Organization (WMO) GRiB file reader. 

To Download tar file, click here: [[http://www.renci.org/~bblanton/files/ReadGrib/read_grib.r3.tar|read_grib]].
Website located: [[http://www.renci.org/~bblanton/files/ReadGrib/read_grib.html|here]].

Read_grib reads GRiB formatted data files into Matlab. 

=== Installation ===
The downloaded tar file contents untars into the directory read_grib.r3.

=== Compilation ===
Compilation is relatively simple as there only one file needs compilation. Move into the read_grib directory as start Matlab. Type the following:
''>> mex BDS_unpack_mex5.c''

=== Tutorial ===
The syntax for read_grib is:
'' grib_struct=read_grib(gribname,irec,p1,v1,p2,v2,...)''
where,
  * gribname - filename containing GRiB records.
  * irec - specifies which GRiB records to read. If irec is a vector, it specifies which GRiB records to return. If irec is a scalar, is specifies how far to read into the GRiB file. If irec==-1, READ_GRIB reads all records(default). Irec can be a cell array of parameter names to extract. Type read_grib('paramtable') for a list of parameter names. Irec can also be the string 'inv{entory}', so that READ_GRIB prints a GRiB contents list. 

=== Examples ===
*To get an inventory of the grib,
''>> grib_struct=read_grib('eta.grb','inv');''

*To extract (decode) the first and third records in the grib,
''>> grib_struct=read_grib('eta.grb',[1 3])''  

*The decoded records are in the .fltarray fields of the 1x2 grib_struct structure. The parameter names are in the .parameter fields of the grib_struct:
''>> {grib_struct(1:2).parameter}''

*The times of the parameters in the GRiB are in the .pds fields of the grib_struct:
''>> grib_struct(1).pds  '' 

*To extract all records in the grib,
''>> grib_struct=read_grib('eta.grb',-1);''