comunpack.f File Reference

This subroutine unpacks a data field that was packed using a complex packing algorithm as defined in the GRIB2 documention. More...

Go to the source code of this file.

Functions/Subroutines
subroutine	comunpack (cpack, len, lensec, idrsnum, idrstmpl, ndpts, fld, ier)
	This subroutine unpacks a data field that was packed using a complex packing algorithm as defined in the GRIB2 documention. More...

Detailed Description

This subroutine unpacks a data field that was packed using a complex packing algorithm as defined in the GRIB2 documention.

Author

Stephen Gilbert

Date

2000-06-21

Definition in file comunpack.f.

Function/Subroutine Documentation

comunpack()

subroutine comunpack	(	character(len=1), dimension(len), intent(in)	cpack,
		integer, intent(in)	len,
			lensec,
			idrsnum,
		integer, dimension(*), intent(in)	idrstmpl,
		integer, intent(in)	ndpts,
		real, dimension(ndpts), intent(out)	fld,
			ier
	)

This subroutine unpacks a data field that was packed using a complex packing algorithm as defined in the GRIB2 documention.

Using info from the GRIB2 Data Representation Template 5.2 or 5.3. Supports GRIB2 complex packing templates with or without spatial differences (i.e. DRTs 5.2 and 5.3).

PROGRAM HISTORY LOG:

• 2000-06-21 Stephen Gilbert
• 2004-12-29 Stephen Gilbert - Added test ( provided by Arthur Taylor/MDL ) to verify that group widths and lengths are consistent with section length.
• 2016-02-26 update unpacking for template 5.3

Parameters

[in]	cpack	The packed data field (character*1 array)
[in]	len	length of packed field cpack.
[in]	lensec	length of section 7 (used for error checking).
[in]	idrsnum	Data Representation Template number 5.N Must equal 2 or 3.
[in]	idrstmpl	Contains the array of values for Data Representation Template 5.2 or 5.3
[in]	ndpts	The number of data values to unpack
[out]	fld	Contains the unpacked data values
[out]	ier	Error return: 0 = OK 1 = Problem - inconsistent group lengths of widths.

Author

Stephen Gilbert

Date

2000-06-21

Definition at line 37 of file comunpack.f.