gdt2gds.F90 File Reference

Convert grid information from a GRIB2 grid to GRIB1 GDS info. More...

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

Detailed Description

Convert grid information from a GRIB2 grid to GRIB1 GDS info.

Author

Stephen Gilbert

Date

2003-06-17

Definition in file gdt2gds.F90.

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
	)

Convert 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.

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 [GRIB2 - CODE TABLE 3.0 - Source of Grid Definition](https://www.nco.ncep.noaa.gov/pmb/docs/grib2/grib2_doc/grib2_table3-0.shtml). 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. See [GRIB2 - TABLE 3.11 - Interpretation of list of numbers at end of section 3](https://www.nco.ncep.noaa.gov/pmb/docs/grib2/grib2_doc/grib2_table3-11.shtml). igds(5) Grid Definition Template Number See [GRIB2 - TABLE 3.1 - Grid Definition Template Number](https://www.nco.ncep.noaa.gov/pmb/docs/grib2/grib2_doc/grib2_table3-1.shtml).
[in]	igdstmpl	Grid Definition Template values.
[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 NCEPLIBS-w3emc w3fi63() function.
[out]	igrid	NCEP predefined GRIB1 grid number. Set to 255, if not an NCEP grid.
[out]	iret	Error return value: 0 No error. 1 Unrecognized GRIB2 GDT number.

Author

Stephen Gilbert

Date

2003-06-17

Definition at line 44 of file gdt2gds.F90.