I just tried the same test on Ubuntu with all the latest packages and had the same problem.
writeOGR does not work for GeoJSON cities <- readOGR(system.file("vectors", package = "rgdal")[1], "cities") is.na(cities$POPULATION) <- cities$POPULATION == -99 summary(cities$POPULATION) td <- "." writeOGR(cities, td, "cities", driver="ESRI Shapefile") # this works writeOGR(cities, td, "cities", driver="GeoJSON") # this fails _______________________________________________ R-sig-Geo mailing list R-sig-Geo@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-geo