Grids are defined in GRIB2 using an accuracy of 1/1000000 (one millionth) of a degree. If this accuracy is not sufficient to describe your grid (latitude/longitude of first and last points, as well as grid increments) without loss of information, you can use a GRIB2 feature that provides a way to describe any regular grid.
Please fill in the numbers that match your grid. You find the GRIB 2 code figures below.
...
Explanation of i/j coordinates and how they are used to describe the encoded fields in GRIB 2 (and ecCodes):
Example of the most used GRIB 2 encoding
Scanning mode 0
|
...
Scanning mode: | j scans positively | ||
j points are consecutive | alternate row scanning |
...
GRIB 2 Code Figues
GRIB | |
Number of points along a parallel |
Number of points along a meridian |
Basic angle of the initial production domain |
Subdivisions of basic angle |
Latitude of first grid point | (°) | |
Latitude of last grid point | (°) | |
Longitude of first grid point | (°) | |
Longitude of last grid point | (°) | |
i direction increment | (°) | |
j direction increment | (°) | |
Resolution and component flags | () | |
Scanning Mode | () |