An internal function to make basemap
code more readable
guess_coordinate_columns(data, lon = NULL, lat = NULL)
Dataframe containing data for which the limits should be calculated.
Character defining the name of the longitude and latitude columns in data
. Use NULL
to guess the longitude and/or latitude columns in x
.
A named vector of colummn names.
This is an internal function, which is automatically run by the basemap
function.