You might want to ask about this on R-sig-geo. I use readOGR() from the rgdal package to read shapefiles, and it is currently working for me in R 3.3.0.
-Don -- Don MacQueen Lawrence Livermore National Laboratory 7000 East Ave., L-627 Livermore, CA 94550 925-423-1062 On 6/16/16, 12:34 PM, "R-help on behalf of Bravo, Mercedes" <r-help-boun...@r-project.org on behalf of mbr...@med.umich.edu> wrote: >Hello, >I have some R code that uses readShapeSpatial in the maptools package to >read a shapefile from ArcGIS. This code worked as recently as May 2016, >when I was using R version 3.2.3. Then, R was updated to version 3.3.0. >Now, when I run the same code that worked three weeks ago, I get an error: > >> path <- "W:/..../CAP_2011_blocks_repair.shp" >> shape <- readShapeSpatial(path, IDvar="GEOID10") >Error in if (nchar(projargs) == 0) projargs <- as.character(NA) : > missing value where TRUE/FALSE needed > >Note that if I run the code above using the older version of R (3.2.3), >it does not give me an error, and instead provides me with an >"SpatialPolygonsDataFrame" object. > >However, it is not easy for me to switch back and forth between versions >of R because I work on a protected computer that does not have an >internet connection or an easy mechanism for file transfer. > >I am using the SpatialPolygons object as an input for subsequent >analysis, so I need something of this type. > >Your help would be greatly appreciated. > > >Regards, >Mercedes >********************************************************** >Electronic Mail is not secure, may not be read every day, and should not >be used for urgent or sensitive issues > > [[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.
