as_coord_matrix         Coerce an R object to a matrix of coordinates
smap                    View spatial objects as interactive leaflet
                        maps
smart_as_sf             Smartly convert an object to a simple features
                        data frame
st_as_sf                Convert coordinate matrices to sf objects
st_as_sfc               Convert coordinate matrices to sfc objects
unsf                    Convert sf objects to normal data.frames with
                        longitude and latitude columns
