In addition to which, the rgeos package may have something. If it's just a single polyline, it may be pretty easy to pull out the coordinates as a two column matrix, append the first row at the end, and rebuild it as a polygon.
The readOGR function in the rgdal package is probably a better choice for loading a shapfile into R. See also the relatively new package named "sf". -Don -- Don MacQueen Lawrence Livermore National Laboratory 7000 East Ave., L-627 Livermore, CA 94550 925-423-1062 Lab cell 925-724-7509 On 11/13/17, 12:47 AM, "R-help on behalf of Jeff Newmiller" <r-help-boun...@r-project.org on behalf of jdnew...@dcn.davis.ca.us> wrote: Might want to post this on R-sig-geo. Might also want to post in plain text format... see below how your message got messed up coming through the mailing list. -- Sent from my phone. Please excuse my brevity. On November 12, 2017 9:58:56 PM PST, Javad Bayat via R-help <r-help@r-project.org> wrote: >I have a shape file as poly line and I want to convert it to polygon.Is >it possible to do that in R?lake ><-readShapeLines("./lake_main_utm.shp")proj4string(lake) <- >CRS("+proj=utm +zone=39 +datum=WGS84") > >Sincerely. > > [[alternative HTML version deleted]] > >______________________________________________ >R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see >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. ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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. ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.