gdt2gds.f File Reference

This routine converts grid information from a GRIB2 grid to GRIB1 GDS info. More...

Go to the source code of this file.

Functions/Subroutines
subroutine	gdt2gds (igds, igdstmpl, idefnum, ideflist, kgds, igrid, iret)
	This routine converts grid information from a GRIB2 Grid Description Section as well as its Grid Definition Template to GRIB1 GDS info. More...

Detailed Description

This routine converts grid information from a GRIB2 grid to GRIB1 GDS info.

Author

Stephen Gilbert

Date

2003-06-17

Definition in file gdt2gds.f.

Function/Subroutine Documentation

gdt2gds()

subroutine gdt2gds	(	integer, dimension(*), intent(in)	igds,
		integer, dimension(*), intent(in)	igdstmpl,
		integer, intent(in)	idefnum,
		integer, dimension(*), intent(in)	ideflist,
		integer, dimension(*), intent(out)	kgds,
		integer, intent(out)	igrid,
		integer, intent(out)	iret
	)

This routine converts grid information from a GRIB2 Grid Description Section as well as its Grid Definition Template to GRIB1 GDS info.

In addition, a check is made to determine if the grid is a NCEP predefined grid.

PROGRAM HISTORY LOG:

• 2003-06-17 Stephen Gilbert
• 2004-04-27 Stephen Gilbert Added support for gaussian grids.
• 2007-04-16 Boi Vuong Added Curvilinear Orthogonal grids.
• 2007-05-29 Boi Vuong Added Rotate Lat/Lon E-grid (203).

Parameters

[in]	igds	Contains information read from the appropriate GRIB Grid Definition Section 3 for the field being returned. Must be dimensioned >= 5. igds(1) Source of grid definition (see Code Table 3.0) igds(2) Number of grid points in the defined grid. igds(3) Number of octets needed for each additional grid points definition. Used to define number of points in each row (or column) for non-regular grids. = 0, if using regular grid. igds(4) Interpretation of list for optional point definition. Code Table 3.11) igds(5) Grid Definition Template Number (Code Table 3.1)
[in]	igdstmpl	Grid Definition Template values for GDT 3.igds(5)
[in]	idefnum	The number of entries in array ideflist. i.e. number of rows (or columns) for which optional grid points are defined.
[in]	ideflist	Optional integer array containing the number of grid points contained in each row (or column).
[out]	kgds	GRIB1 GDS as described in w3fi63 format.
[out]	igrid	NCEP predefined GRIB1 grid number set to 255, if not NCEP grid.
[out]	iret	Error return value: 0 Successful 1 Unrecognized GRIB2 GDT number 3.igds(5)

Author

Stephen Gilbert

Date

2003-06-17

Definition at line 44 of file gdt2gds.f.