A similar thread is running on R-sig-geo - perhaps you could review the comments there:
http://n2.nabble.com/coordinates-of-SpatialLines-DF-tp4468579p4468579.html and join in if you need further clarification? Roger ----- Roger Bivand Economic Geography Section Department of Economics Norwegian School of Economics and Business Administration Helleveien 30 N-5045 Bergen, Norway -- View this message in context: http://n4.nabble.com/Edit-a-Sptial-Lines-Object-tp1311520p1361752.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.