table of contents
| g2_create.c(3) | Library Functions Manual | g2_create.c(3) |
NAME¶
g2_create.c - Initialize a new GRIB2 message and pack GRIB2 sections 0 (Indicator Section) and 1 (Identification Section).
SYNOPSIS¶
#include 'grib2_int.h'
#include <stdio.h>
Macros¶
#define LENSEC0 16
Length of GRIB Section 0. #define MAPSEC1LEN 13
Length of Map Section 1.
Functions¶
g2int g2_create (unsigned char *cgrib, g2int
*listsec0, g2int *listsec1)
Initialize a new GRIB2 message and pack GRIB2 Section 0 (Indicator Section)
and Section 1 (Identification Section).
Detailed Description¶
Initialize a new GRIB2 message and pack GRIB2 sections 0 (Indicator Section) and 1 (Identification Section).
Author
Date
Definition in file g2_create.c.
Macro Definition Documentation¶
#define LENSEC0 16¶
Length of GRIB Section 0.
Definition at line 11 of file g2_create.c.
#define MAPSEC1LEN 13¶
Length of Map Section 1.
Definition at line 10 of file g2_create.c.
Function Documentation¶
g2int g2_create (unsigned char * cgrib, g2int * listsec0, g2int * listsec1)¶
Initialize a new GRIB2 message and pack GRIB2 Section 0 (Indicator Section) and Section 1 (Identification Section). This routine is used with routines g2_addlocal(), g2_addgrid(), g2_addfield(), and g2_gribend() to create a complete GRIB2 message. g2_create() must be called first to initialize a new GRIB2 message. A call to g2_gribend() is required to complete GRIB2 message after all fields have been added.
Parameters
listsec0 Contains information needed for GRIB Indicator Section 0. Must be dimensioned >= 2.
- listsec0[0] Discipline-GRIB Master Table Number ([Code Table 0.0] (https://www.nco.ncep.noaa.gov/pmb/docs/grib2/grib2_doc/grib2_table0-0.shtml)).
- listsec0[1] GRIB Edition Number (currently 2).
listsec1 Contains information needed for GRIB Identification Section 1. Must be dimensioned >= 13.
- listsec1[0] Id of orginating centre ([Table 0] (https://www.nco.ncep.noaa.gov/pmb/docs/on388/table0.html)).
- listsec1[1] Id of orginating sub-centre ([Table C] (https://www.nco.ncep.noaa.gov/pmb/docs/on388/tablec.html)).
- listsec1[2] GRIB Master Tables Version Number ([Table 1.0] (https://www.nco.ncep.noaa.gov/pmb/docs/grib2/grib2_doc/grib2_table1-0.shtml)).
- listsec1[3] GRIB Local Tables Version Number ([Table 1.1] (https://www.nco.ncep.noaa.gov/pmb/docs/grib2/grib2_doc/grib2_table1-1.shtml)).
- listsec1[4] Significance of Reference Time ([Table 1.2] (https://www.nco.ncep.noaa.gov/pmb/docs/grib2/grib2_doc/grib2_table1-2.shtml))
- listsec1[5] Reference Time - Year (4 digits)
- listsec1[6] Reference Time - Month
- listsec1[7] Reference Time - Day
- listsec1[8] Reference Time - Hour
- listsec1[9] Reference Time - Minute
- listsec1[10] Reference Time - Second
- listsec1[11] Production status of data ([Table 1.3] (https://www.nco.ncep.noaa.gov/pmb/docs/grib2/grib2_doc/grib2_table1-3.shtml)).
- listsec1[12] Type of processed data ([Table 1.4] (https://www.nco.ncep.noaa.gov/pmb/docs/grib2/grib2_doc/grib2_table1-4.shtml)).
Returns
- > 0 Current size of new GRIB2 message
- G2_CREATE_GRIB_VERSION Tried to use for version other than GRIB Edition 2
This routine is intended for use with routines g2_addlocal(), g2_addgrid(), g2_addfield(), and g2_gribend() to create a complete GRIB2 message.
Author
Date
Definition at line 68 of file g2_create.c.
References G2_CREATE_GRIB_VERSION, LENSEC0, MAPSEC1LEN, and sbit().
Author¶
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