Thank you David & Michael for your answers.
It makes more sense now!

Cheers,
Boris

2012/6/6 David L Carlson <dcarlson@tamu.edu>

> You might try R-Sig-Geo for the reasons, but you need to include the UTM
> zone to convert:
>
> SP<-SpatialPoints(cbind(126.59,-14.30),proj4string=CRS("+proj=longlat"))
> SP
>
> SpatialPoints:
>     coords.x1 coords.x2
> [1,]    126.59     -14.3
> Coordinate Reference System (CRS) arguments: +proj=longlat +ellps=WGS84
>
> coordinatesUTM<-spTransform(SP,CRS("+proj=utm +zone=52"))
> coordinatesUTM
>
> SpatialPoints:
>     coords.x1 coords.x2
> [1,]  240015.6  -1582256
> Coordinate Reference System (CRS) arguments: +proj=utm +zone=52
> +ellps=WGS84
>
> ----------------------------------------------
> David L Carlson
> Associate Professor of Anthropology
> Texas A&M University
> College Station, TX 77843-4352
>
>
>
> > -----Original Message-----
> > From: r-help-bounces@r-project.org [mailto:r-help-bounces@r-
> > project.org] On Behalf Of Boris Beranger
> > Sent: Tuesday, June 05, 2012 3:29 AM
> > To: R-help@r-project.org
> > Subject: [R] Converiting longitude/latitude to utm
> >
> > Dear all,
> >
> > I have been trying to convert coordinates from longitude/latitude to
> > utm
> > but I got an error. As soon as the longitude coordinate is greater than
> > 90,
> > I get the folloowing error message:  "error in pj_transform: latitude
> > or
> > longitude exceeded limits"
> >
> > Here is what I did:
> >
> >  SP<-SpatialPoints(cbind(126.59,-
> > 14.30),proj4string=CRS("+proj=longlat"))
> > coordinatesUTM<-spTransform(SP,CRS("+proj=utm"))
> >
> > Error in spTransform(SP, CRS("+proj=utm")) :
> >   error in pj_transform: latitude or longitude exceeded limits
> >
> > Can someone explain me what I did wrong? I am using coordinates of
> > Australia so the range of my longitudes is around [110,150] and the one
> > of
> > my latitudes [-10,-45].
> >
> > Thanks in advance,
> >
> > Cheers,
> > Boris
> >
> >       [[alternative HTML version deleted]]
> >
> > ______________________________________________
> > R-help@r-project.org mailing list
> > https://stat.ethz.ch/mailman/listinfo/r-help
> > PLEASE do read the posting guide http://www.R-project.org/posting-
> > guide.html
> > and provide commented, minimal, self-contained, reproducible code.
>
>

	[[alternative HTML version deleted]]

