I would try reinstalling the package. On 04/26/2018 06:31 PM, Glenn Stauffer wrote: > I ran across a problem when trying to use spsample to sample points along a > line, while in a Linux OS (Mint 18.3). The following code (which works fine > in Win 10): > > > > pts <- matrix(c(c(6000,6015,6021,6035,6050), > c(6000,5995,6000,6040,6095)),5,2,byrow=FALSE) > L = SpatialLines(list(Lines(list(Line(coordinates(pts))),"X")),proj4string = > CRS("+init=epsg:3071")) > plot(L) > Lsamp <- spsample(L,10,type="regular",offset=0.5) # this is the line that > generates the error > > > > produces the following error: > > > > Error in .C("sp_lengths", x, y, n, lengths, lonlat, PACKAGE = "sp") : > "sp_lengths" not available for .C() for package "sp" > > Could this be related to some wrong versions of certain dependencies (e.g., > GDAL)? I don't know much about that, but I did run into that issue with > trying to install other packages (rgeos, sf). In any case, how can I prevent > this error? > > > > Thanks, > > Glenn > > > > > > > [[alternative HTML version deleted]] > > _______________________________________________ > R-sig-Geo mailing list > R-sig-Geo@r-project.org > https://stat.ethz.ch/mailman/listinfo/r-sig-geo >
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