Custom Code Table

Hello,

Is it possible to load a custom code table for use when opening a Grib dataset with Xarray? I can’t seem to find an example of how that would be done. I’d imagine something like this:

ds = xr.open_dataset(
    "/path/to/grb",
     engine="cfgrib", 
    backend_kwargs={"code_table": "/path/to/codetab"}
) 

Thanks! Paul

[pgierz]

@aaronspring, in general I agree: how we actually do it isn’t so important. It would IMO be nice to be able to provide the community with some sort of easy-to-use solution (and more importantly, easy-to-discover!); but I believe the topic we have specifically in mind (e.g. GRB, CDO, and related code tables) is out of scope here. To work on the xarray extension idea, I started https://github.com/pydata/xarray/discussions/6622. Also, if there any “let’s make climate model output more friendly” meetings you are involved in, please let me know! [e-mail]

So, if no one minds, I will close this issue. There is enough posted info I believe for other people who might stumble across this to get started.

[aaronspring]

Whether using a function or wrapping it with the internals, I don’t mind. The function needs an xr.Dataset and the path to the codes file as input IMO.

Recently had chat with @moritz-g about this topic and we decided it’s not a priority for us, but would contribute.