Hi,
To transform coordinates you can use the spTransform function from the
rgdal pacakge. It uses proj4 to do the transformations. Proj uses a
string to describe a certain projection, the so called proj4string. If
you can determine the proj4string for both your projections you can
transform between them. The first string (WGS84) looks like this:
"+proj=longlat +datum=WGS84"
The second (UTM) something like:
"+proj=utm +zone=yourzone +datum=yourdatum"
See the documentation of spTransform for more information on how to use
the function.
cheers and hth,
Paul
Marc Marí Dell'Olmo wrote:
Dear R-users,
Can anyone tell me how to convert point coordinates from WSG84 (google
maps coordinates) format to UTM HUSO-31 ED-50. And if I have a map
(shp format) with UTM HUSO-31 ED-50 coordinates, how can I convert to
WSG84 (google maps coordinates) coordinates. Should I install some
external software?
Can anyone tell me the instructions?
Thank you,
Marc
_______________________________________________
R-sig-Geo mailing list
[email protected]
https://stat.ethz.ch/mailman/listinfo/r-sig-geo
--
Drs. Paul Hiemstra
Department of Physical Geography
Faculty of Geosciences
University of Utrecht
Heidelberglaan 2
P.O. Box 80.115
3508 TC Utrecht
Phone: +3130 274 3113 Mon-Tue
Phone: +3130 253 5773 Wed-Fri
http://intamap.geo.uu.nl/~paul
_______________________________________________
R-sig-Geo mailing list
[email protected]
https://stat.ethz.ch/mailman/listinfo/r-sig-geo
