user defined grid mapping

[larsbuntemeyer]

The documentation on set_grid_mapping says:

Additional mapping names and parameter names can be defined via the MIP table.

Could you give a quick example on how to do that? I found "sample_user_mapping" in CMIP6_grids.json but it's not clear, how i can use that or adapt it. For example, if i use:

cmor.set_grid_mapping(
        cmorGrid,
        "sample_user_mapping",
        ["parameter1", "parameter2"],
        [1., 2.],
        ["", ""],
)

i get

 Error: you defined your grid with 2 axes but grid_mapping 'sample_user_mapping' requires exactly 0 axes

What i would actually like to do is to define my own rotated_latitude_longitude grid mapping with a different out_name. From what i can see in

cmor/Src/cmor_grids.c

Lines 400 to 408 in d7346b8

	} else if (strcmp(name, "rotated_latitude_longitude") == 0) {
	*natt = 3;
	strcpy(att[0], "grid_north_pole_latitude");
	strcpy(att[1], "grid_north_pole_longitude");
	strcpy(att[2], "north_pole_grid_longitude");
	*ndims = 2;
	strcpy(dims[0], "grid_latitude");
	strcpy(dims[1], "grid_longitude");
	} else if (strcmp(name, "stereographic") == 0) {

this is more or less hardcoded, right?