Chris--
To clarify and summarize:
You need to define the coordinate system of your UTM data via proj4string:
      proj4string(cap.coords.sp) <- CRS("")



On Thu, May 23, 2013 at 12:30 PM, Edzer Pebesma <
edzer.pebesma@uni-muenster.de> wrote:

>
>
> On 05/23/2013 07:08 PM, Chris Waigl wrote:
> >
> >>
> >> Hi Roger- Getting closer to fixing the problem. You were correct with
> the
> >> proj4string differing. The fish capture coordinates are "NA" and the
> Basins
> >> are "+proj=longlat +ellps=WGS84." So now I am trying to convert the
> points.
> >> Here is the code I input:
> >>
> >> cap.coords.sp<-spTransform(cap.coords.sp,CRS("+proj=longlat"))
> >
> > Would this work:
> >
> > proj4string(cap.coords.sp) <- "+proj=longlat +datum=WGS84"
>
> this will only change the proj4string, but not reproject (and warn about
> this fact).
>
> You have to use spTransform with the string containing the datum.
>
> >
> > (Or maybe "+proj=longlat +ellps=WGS84" -- not sure why I use +datum and
> you use +ellps.)
> >
> > Best regards,
> >
> > Chris Waigl
> > _______________________________________________
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> > R-sig-Geo@r-project.org
> > https://stat.ethz.ch/mailman/listinfo/r-sig-geo
> >
>
> --
> Edzer Pebesma
> Institute for Geoinformatics (ifgi), University of Münster
> Weseler Straße 253, 48151 Münster, Germany. Phone: +49 251
> 83 33081, Fax: +49 251 8339763 http://ifgi.uni-muenster.de
>
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