Wanted to post an exchange with Roger Bivand on combining KML files. I had hoped to combine multiple KML files into a single SpatialPolygonsDataFrame. I used readOGR to bring files into R; had I worked with .shp files, I might've used readShapePoly and a unique IDvar. SPRbind construction would have followed. Turns out I needed to review spChFIDs-methods in the sp package. Roger said, 'they let you assign row.names to the geometries and the data slot data.frame consistently.' Zack -- View this message in context: http://r.789695.n4.nabble.com/Combining-two-or-more-KML-files-in-R-tp4378333p4378333.html Sent from the R help mailing list archive at Nabble.com.