To read grib and grib2 file format

grib and grib2 are format used to store meteorological data. It is the native format used by ECMWF server.

To read it in R with MacOSX:

Using Macport, install the library wgrib2:

sudo port install wgrib2

You must also install the wgrib library:
Look at here:
https://rda.ucar.edu/datasets/ds083.2/software/wgrib_install_guide.txt

Then you can install rNOMAD package in R

You must install gdal library

You can use also the raster package with rgdal and goal library

4 packages can be used:
rNOMAD, rgdal, raster, stars

I found that the simple is to use rgdal



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