NAME

       g2_unpack5.c - Unpack Section 5 (Data Representation Section) as defined in GRIB Edition
       2.

SYNOPSIS

       #include <stdio.h>
       #include <stdlib.h>
       #include 'grib2.h'

   Functions
       g2int g2_unpack5 (unsigned char *cgrib, g2int *iofst, g2int *ndpts, g2int *idrsnum, g2int
           **idrstmpl, g2int *mapdrslen)
           This subroutine unpacks Section 5 (Data Representation Section) as defined in GRIB
           Edition 2.

Detailed Description

       Unpack Section 5 (Data Representation Section) as defined in GRIB Edition 2.

       Author
           Stephen Gilbert

       Date
           2002-10-31

       Definition in file g2_unpack5.c.

Function Documentation

   g2int g2_unpack5 (unsigned char * cgrib, g2int * iofst, g2int * ndpts, g2int * idrsnum, g2int
       ** idrstmpl, g2int * mapdrslen)
       This subroutine unpacks Section 5 (Data Representation Section) as defined in GRIB Edition
       2. PROGRAM HISTORY LOG:

       • 2002-10-31 Gilbert

       • 2009-01-14 Vuong Changed structure name template to gtemplate

       Parameters
           cgrib char array containing Section 5 of the GRIB2 message.
           iofst Bit offset for the beginning of Section 5 in cgrib. Returned with bit offset at
           the end of Section 5.
           ndpts Number of data points unpacked and returned.
           idrsnum Data Representation Template Number (see Code Table 5.0).
           idrstmpl Pointer to an integer array containing the data values for the specified Data
           Representation Template (N=idrsnum). Each element of this integer array contains an
           entry (in the order specified) of Data Representation Template 5.N.
           mapdrslen- Number of elements in idrstmpl. i.e. number of entries in Data
           Representation Template 5.N (N=idrsnum).

       Returns

           • 0 no error

           • 2 Not Section 5

           • 6 memory allocation error

           • 7 'GRIB' message contains an undefined Data Representation Template.

       Author
           Stephen Gilbert

       Date
           2002-10-31

       Definition at line 40 of file g2_unpack5.c.

       References gtemplate::ext, extdrstemplate(), gtemplate::extlen, gbit(), getdrstemplate(),
       gtemplate::map, gtemplate::maplen, and gtemplate::needext.

       Referenced by g2_getfld().

Author

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