A Python reference implementation of the CF data model
Return the position of the cell dimension.
In UGRID, this is provided by one of the “edge_dimension”, “face_dimension” or “volume_dimension” variables.
Added in version (cfdm): 1.11.0.0
Return the value of the default parameter if there is no cell dimension position.
If set to an Exception instance then it will be raised instead.
Exception
int
The position of the cell dimension.