Import all the files - seemed necessary to let uvcdat.py find them.
Eliminate the import of reductions, which has been troublesome.
I had to copy the latAxis() definition, and make some minor changes.
Eliminate the import of reductions, which has been troublesome.
The necessary changes are mostly in ncl_isms.

In ncep_ocean_heat_transport, allow the input path to be, not a path, but a
file table - we can find suitable paths in the file table.