Sorry, I forgot to say that I use Rstudio (newest version), but it is the same problem with Mac and Windows. -- View this message in context: http://r.789695.n4.nabble.com/plotting-points-on-a-map-assigning-vectors-to-values-from-dataset-tp4643182p4643183.html Sent from the R help mailing list archive at Nabble.com.