Probably merging ods

[jmcclena]

@orso82 Maybe I'm just doing something stupid, but I'm having trouble combining ods due to certain entries not having valid IMAS locations. Example script and its output are shown below.

def combine_ods(ods_1, ods_2, weight=0.5,update=True):
    from omas import ODS
    ods_n = ods_1
    if not update:
        ods_n = ODS().copy_attrs_from(ods_1)   

    for item in ods_1:

        if isinstance(ods_1[item], ODS):
            ods_n[item] = combine_ods(ods_1[item], ods_2[item], weight=weight,update=True)
        elif isinstance(ods_1[item], numpy.ndarray):
            ods_n[item] = ods_1[item] * (1.0-weight) + weight * ods_2[item]
        elif isinstance(ods_1[item], float):
            ods_n[item] = ods_1[item] * (1.0-weight) + weight * ods_2[item]
            print(item)
    print(ods_n.keys())
    return ods_n

try:
    ods1 = ODS()
    ods1['core_profiles.profiles_1d.0.ion.0.element[0].z_n'] = 1.
    ods2 = ODS()
    ods2['core_profiles.profiles_1d[0].ion[0].element[0].z_n'] = 2.
    ods_new = combine_ods(ods1, ods2,
     weight=0.5,update=False)
except Exception as err:
    print(err)

try:
    ods1 = ODS()
    ods1['equilibrium.time_slice[0].profiles_2d[0].psi'] = np.array([[0,1],[0,1]])
    ods2 = ODS()
    ods2['equilibrium.time_slice[0].profiles_2d[0].psi'] = np.array([[0,2],[0,2]])
    ods_new = combine_ods(ods1, ods2,weight=0.5,update=False)
except Exception as err:
    print(err)

outputs:

['z_n']
[0]
Not a valid IMAS 3.32.1 location: core_profiles.profiles_1d.0.ion.0.element
                                                                                 ^^^^^^^
Did you mean: element, temperature, density, velocity, temperature_fit, ...
['psi']
[0]
Not a valid IMAS 3.32.1 location: equilibrium.time_slice.0.profiles_2d
                                                                        ^^^^^^^^^^^
Did you mean: profiles_2d, profiles_1d, global_quantities, coordinate_system, constraints, ...