On Thu, 9 Jun 2005, Ernesto Jardim wrote: > Hi, > > I'm trying to use transform my mercator locations into utm but I'm doing > something wrong because only x is transformed ... see
Two points: I think you are getting the transform you specify, from +proj=merc to +proj=utm with a different x origin - I suspect you meant +proj=latlong for the input data. If the coordinates below are somewhere off Cabo de Sines, they are latlong. Second, spproj is not on CRAN, so either the R-spatial-dev mailing list on sourceforge (where spproj and friends are living while they grow up) or the R-sig-geo list might have been a good choice. Please consider continuing this on R-sig-geo. Best wishes, Roger > > > xy.sp > SpatialPoints: > loni lati > [1,] -8.85 38.16 > [2,] -9.19 37.99 > [3,] -9.11 37.97 > [4,] -9.06 38.15 > [5,] -9.03 37.87 > [6,] -9.14 37.81 > [7,] -9.09 37.70 > [8,] -8.95 37.45 > [9,] -9.17 37.37 > [10,] -9.00 37.34 > Coordinate Reference System (CRS) arguments: +proj=merc +datum=WGS84 > > transform(xy.sp, CRS("+proj=utm +zone=29")) > SpatialPoints: > loni lati > [1,] 1505638 38.62347 > [2,] 1505638 38.45141 > [3,] 1505638 38.43116 > [4,] 1505638 38.61335 > [5,] 1505638 38.32995 > [6,] 1505638 38.26922 > [7,] 1505638 38.15788 > [8,] 1505638 37.90485 > [9,] 1505638 37.82388 > [10,] 1505638 37.79351 > Coordinate Reference System (CRS) arguments: +proj=utm +zone=29 > +ellps=WGS84 > > What am I doing wrong ? > > Thanks > > EJ > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html > -- 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-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html