gf_unpack6.F90 File Reference

Unpack Section 6 (Bit-Map Section) of a GRIB2 message. More...

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Functions/Subroutines
subroutine	gf_unpack6 (cgrib, lcgrib, iofst, ngpts, ibmap, bmap, ierr)
	Unpack Section 6 (Bit-Map Section) of a GRIB2 message, starting at octet 6 of that Section. More...

Detailed Description

Unpack Section 6 (Bit-Map Section) of a GRIB2 message.

Author

Stephen Gilbert

Date

2000-05-26

Definition in file gf_unpack6.F90.

Function/Subroutine Documentation

gf_unpack6()

subroutine gf_unpack6	(	character(len = 1), dimension(lcgrib), intent(in)	cgrib,
		integer, intent(in)	lcgrib,
		integer, intent(inout)	iofst,
		integer, intent(in)	ngpts,
		integer, intent(out)	ibmap,
		logical*1, dimension(:), pointer	bmap,
		integer, intent(out)	ierr
	)

Unpack Section 6 (Bit-Map Section) of a GRIB2 message, starting at octet 6 of that Section.

Parameters

[in]	cgrib	Character array that contains the GRIB2 message.
[in]	lcgrib	Length (in bytes) of GRIB message array cgrib.
[in,out]	iofst	Bit offset of the beginning/end(returned) of Section 6.
[in]	ngpts	Number of grid points specified in the bit-map.
[out]	ibmap	Bitmap indicator (see Code Table 6.0) 0 bitmap applies and is included in Section 6. 1-253 Predefined bitmap applies. 254 Previously defined bitmap applies to this field. 255 Bit map does not apply to this product.
[out]	bmap	Logical*1 array containing decoded bitmap. (if ibmap=0) The dimension of this array can be obtained in advance from maxvals(7), which is returned from subroutine gribinfo().
[out]	ierr	Error return code. 0 no error. 4 Unrecognized pre-defined bit-map. 6 memory allocation error.

Author

Stephen Gilbert

Date

2000-05-26

Definition at line 29 of file gf_unpack6.F90.

References g2_gbytec(), and g2_gbytesc().

Referenced by getgb2r(), and gf_getfld().