Variable grib2LookupTable34`Const`

Section: 3
Octet: 72
Applicable Grid Templates: 0-3, 40-43, 204

grib2LookupTable34: Record<number, Record<number, string>> = ...

Table 3.4 - SCANNING MODE

Details:

Reserved Bits:

Special Values:

This table defines the scanning mode flags used in GRIB2 files, specifying the scanning direction and row/column offsets.

(1). i direction - West to east along a parallel or left to right along an x-axis.
(2). j direction - South to north along a meridian, or bottom to top along a y-axis.
(3). If bit number 4 is set, the first row scan is defined by previous flags.
(4). La1 and Lo1 define the first row, which is an odd row.
(5). Di and Dj are assumed to be positive, with the direction of i and j being given by bits 1 and 2.
(6). Bits 5 through 8 may be used to generate staggered grids, such as Arakawa grids (see Attachment, Volume 1.2, Part A, Att. GRIB).
(7). If any of bits 5, 6, 7 or 8 are set, Di and Dj are not optional.