\BeginKnitrBlock{rmdnote}<div class="rmdnote">The geometry column of `sf` objects is typically called `geometry` but any name can be used.
The following command, for example, creates a geometry column named g:
  
`st_sf(data.frame(n = world$name_long), g = world$geom)`

This enables geometries imported from spatial databases to have a variety of names such as `wkb_geometry` and `the_geom`.</div>\EndKnitrBlock{rmdnote}