gb_info.F90 File Reference

Find the number of gridded fields and Local Use Sections in a GRIB2 message. More...

Go to the source code of this file.

Functions/Subroutines
subroutine	gb_info (cgrib, lcgrib, listsec0, listsec1, numfields, numlocal, maxlocal, ierr)
	Find the number of gridded fields and Local Use Sections in a GRIB2 message. More...

Detailed Description

Find the number of gridded fields and Local Use Sections in a GRIB2 message.

Author

Stephen Gilbert

Date

2000-05-25

Definition in file gb_info.F90.

Function/Subroutine Documentation

gb_info()

subroutine gb_info	(	character(len = 1), dimension(lcgrib), intent(in)	cgrib,
		integer, intent(in)	lcgrib,
		integer, dimension(3), intent(out)	listsec0,
		integer, dimension(13), intent(out)	listsec1,
		integer, intent(out)	numfields,
		integer, intent(out)	numlocal,
		integer, intent(out)	maxlocal,
		integer, intent(out)	ierr
	)

Find the number of gridded fields and Local Use Sections in a GRIB2 message.

Also various checks are performed to see if the message is a valid GRIB2 message.

This function is similar to gribinfo(), but returns less information.

Parameters

[in]	cgrib	Character array that contains the GRIB2 message.
[in]	lcgrib	Length (in bytes) of GRIB message in array cgrib.
[out]	listsec0	Contains information decoded from GRIB Indicator Section 0. Must be dimensioned >= 2. listsec0(1) Discipline-GRIB Master Table Number (see Code Table - 0.0) listsec0(2) GRIB Edition Number (currently 2) listsec0(3) Length of GRIB message
[out]	listsec1	Contains information read from GRIB Identification Section 1. Must be dimensioned >= 13. listsec1(1) Id of orginating centre (Common Code Table C-1) listsec1(2) Id of orginating sub-centre (local table) listsec1(3) GRIB Master Tables Version Number (Code Table 1.0) listsec1(4) GRIB Local Tables Version Number listsec1(5) Significance of Reference Time (Code Table 1.1) listsec1(6) Reference Time - Year (4 digits) listsec1(7) Reference Time - Month listsec1(8) Reference Time - Day listsec1(9) Reference Time - Hour listsec1(10) Reference Time - Minute listsec1(11) Reference Time - Second listsec1(12) Production status of data (Code Table 1.2) listsec1(13) Type of processed data (Code Table 1.3)
[out]	numfields	The number of gridded fieldse found in the GRIB message.
[out]	numlocal	The number of Local Use Sections (Section 2) found in the GRIB message.
[out]	maxlocal	The size of the largest Local Use Section (Section 2). Can be used to ensure that the return array passed to subroutine getlocal is dimensioned large enough.
[out]	ierr	Error return code. 0 no error. 1 Beginning characters "GRIB" not found. 2 GRIB message is not Edition 2. 3 Could not find Section 1, where expected. 4 End string "7777" found, but not where expected. 5 End string "7777" not found at end of message. 6 Invalid section number found.

Author

Stephen Gilbert

Date

2000-05-25

Definition at line 53 of file gb_info.F90.

References g2_gbytec().