On Thu, 25 May 2006, Michael Sumner wrote: > Hello > > I have the same problem, I've been meaning to explore further before > posting, but since spproj is not on CRAN I don't think I've missed > something obvious. This seems to be related to rgdal 0.4-4: >
We are half way through changing the relations between sp and rgdal, spproj is retired because it is all in rgdal. The transform method is to be named spTransform - could you please see if spTransform() in rgdal 4.4 helps? Roger > ## using data from ?project example > > library(rgdal) > > ## project works OK > data(state) > res <- project(cbind(state.center$x, state.center$y), "+proj=lcc > +lat_1=48 +lat_2=33 +lon_0=-100") > res1 <- project(res, "+proj=lcc +lat_1=48 +lat_2=33 +lon_0=-100", > inv=TRUE) > > ## but transform does not > > res <- SpatialPoints(res, CRS("+proj=lcc +lat_1=48 +lat_2=33 +lon_0=-100")) > > sessionInfo() > #Version 2.3.0 (2006-04-24) > #i386-pc-mingw32 > > #attached base packages: > #[1] "methods" "stats" "graphics" "grDevices" "utils" "datasets" > #[7] "base" > > #other attached packages: > # rgdal pixmap abind sp > # "0.4-4" "0.4-4" "1.1-0" "0.8-14" > > > transform(res, CRS("+proj=longlat")) > #Loading required package: spproj > #Error in transform(res, CRS("+proj=longlat")) : > # for using (coordinate) transform on objects deriving from > Spatial, library spproj is required > #In addition: Warning message: > #there is no package called 'spproj' in: library(package, lib.loc = > lib.loc, character.only = TRUE, logical = TRUE, > > _______________________________________________ > R-sig-Geo mailing list > R-sig-Geo@stat.math.ethz.ch > https://stat.ethz.ch/mailman/listinfo/r-sig-geo > -- Roger Bivand Economic Geography Section, Department of Economics, Norwegian School of Economics and Business Administration, Helleveien 30, N-5045 Bergen, Norway. voice: +47 55 95 93 55; fax +47 55 95 95 43 e-mail: [EMAIL PROTECTED] _______________________________________________ R-sig-Geo mailing list R-sig-Geo@stat.math.ethz.ch https://stat.ethz.ch/mailman/listinfo/r-sig-geo