Define 'cartesian_size' for all grids, including 'UnstructuredVectorGrid' and 'UnstructuredColumnGrid', returning a single dimension with length = number of cells.
This allows generic code eg in ReactionForceGrid to work for these grids, assuming the supplied forcing file has a single spatial dimension corresponding to the total number of cells in the model grid.
Define 'cartesian_size' for all grids, including 'UnstructuredVectorGrid' and 'UnstructuredColumnGrid', returning a single dimension with length = number of cells.
This allows generic code eg in ReactionForceGrid to work for these grids, assuming the supplied forcing file has a single spatial dimension corresponding to the total number of cells in the model grid.