[R-sig-Geo] krig.image beyond data points

Paul Hiemstra p.hiemstra at geo.uu.nl
Wed Dec 6 13:38:24 CET 2006

Dear Micheal,

I think you can also use the spplot command. It is not present in the 
gstat package but in the sp package. The most recent version of gstat 
(0.9-34)  needs sp present, so I think you already have this package. 
For more info on spplot use:


I think that the ylim and xlim options will suit your needs, just 
overwrite the default values (xlim = bbox(obj)[1, ], ylim = bbox(obj)[2, ]).



Micheal Kemp schreef:
> Hello all-
> I am using R to create a continuous surface with the krig.image command.  My only problem is that my data points do not encompass the full extent of the area that I am trying to map.  Is there a way to force krig.image to extrapolate just a little beyond the range of the data points? Thank you for any suggestions.
> Mike Kemp
> Geog - LSU
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Drs. Paul Hiemstra
Department of Physical Geography
Faculty of Geosciences
University of Utrecht
Heidelberglaan 2
P.O. Box 80.115
3508 TC Utrecht
Phone: 	+31302535773
Fax:	+31302531145

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