to a multi-dimensional grid.  However, with the exception of trajectory data the coordinates do not all have the same dimensionality.  Timeseries data for instance has a station location for each station, and multiple observations in time.  Profile data has station location and time, and multiple heights/depths in each profile. For the SCAT2GRID functions we need all of the first arguments, the "scattered" locations and observation, to be of the same size.  We need to expand the station data to repeat t