GRIB2 - TABLE 3.4

SCANNING MODE

In Section 3, Octet 72
(For grid templates 0-3, 40-43 and 204)

Created 08/17/2007


Bit No. Value Meaning
1
 0
 Points in the first row or column scan in the +i (+x) direction
1
 Points in the first row or column scan in the -i (-x) direction
2
 0
 Points in the first row or column scan in the -j (-y) direction
1
 Points in the first row or column scan in the +j (+y) direction
3
 0
 Adjacent points in the i (x) direction are consecutive
1
 Adjacent points in the j (y) direction are consecutive
4
 0
 All rows scan in the same direction
1
 Adjacent rows scan in the opposite direction
5-8
Reserved

Notes:

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.


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