Hello list I have been trying to do a projection conversion from lat lon to a UTM grid
I followed an example in the April discussion list provided by Roger Bivand and adapted it to my own data. Everythings seemd to work well up until the transform() method which failed to execute. The failure seems due to a problem with loading the "spproj package" but I can't make sense of the error messages which are listed below. Re-installing spproj did not make a difference. I am working on a Windows system Any hints would be appreciated Regards Karl # import of shape file wingem38 <- readOGR(dsn = "em38/wing_em38.shp", layer="wing_em38", verbose=T) read all EPSG definitions into memory EPSG <- make_EPSG() # extract possible options for UTM zone -54 EPSG[grep("UTM zone 54S", EPSG$note), 1:2] # gives 4 options, select WGS 84 and assign to variable utm54S <- CRS("+init=epsg:32754") showWKT(CRSargs(utm54S)) # If shapefiles have a *.prj file already, readOGR() will pick it up. # If not, need to assign the input coordinate reference system # to the Spatial object(s): my_ll <- CRS("+proj=lonlat +datum=WGS84") proj4string(wingem38) <- my_ll em38utm <- transform(wingem38, utm54S) Loading required package: spproj Error in importIntoEnv(impenv, impnames, ns, impvars) : objects 'Sline', 'Sring', 'Srings', 'SpatialRings', 'getSRpolygonsSlot', 'getSringsIDSlot', 'getSringsSringsSlot', 'getSringCoordsSlot' are not exported by 'namespace:sp' [EMAIL PROTECTED] in transform(wingem38, utm54S) : for using (coordinate) transform on objects deriving from Spatial, library spproj is required _______________________________________________ R-sig-Geo mailing list R-sig-Geo@stat.math.ethz.ch https://stat.ethz.ch/mailman/listinfo/r-sig-geo