AFAIK, 4326 is the PROJ.4 code for "+proj=longlat". You should find that 

proj4string(data)

shows you something like that string above, and

summary(data)

will report that it is not projected. 

In general, please provide at least the results of summary on your data
object/s. 

BTW, just because you used kriging does not at all mean that the data are 
"projected" - at the visualization and (some) analytical levels longlat
is treated just like any other rectangular coordinate system. 

HTH

Cheers, Mike.

==============Original message text===============
On Tue, 19 Jun 2007 0:33:47 +1000 "Thomas Szegvary" wrote:

Hi there

I have an ordinary kriging result (gstat), which is in a projected
coordinate system of course (I used
proj4string(data)=CRS("+init=epsg:4326"). But I will need the map in
geographical coordinates (lon, lat...) for visualisation. How can I
back-project the map?
Thanks 
Thomas


__

Thomas Szegvary
Institute of Environmental Geosciences
Department of Geosciences
University of Basel
Bernoullistrasse 30
CH - 4056 Basel

Tel.  41-61-267 04 82
Fax. 41-61-267 04 79
Email: t.szegvary@unibas.ch
www.radon.unibas.ch
www.unibas.ch/environment

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===========End of original message text===========



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