[R-sig-Geo] Kriging and plotting categorical variables

[Guy Bayegnak]

Dear all,
I am working with a set of categorical variables labelled: Group1, Group2, Group3,  and Group4. I created a new categorical variables where I replaced the observation Goup1 to Group4 by 1 to 4.  Then I performed Ordinary Kriging on the new variable [1-4].  But the outcome of the kriging ranges only from 2.0 to 3.5. Basically Goup1 is lost.
Please tell me what I am doing wrong. Also please let me know how to do interpolation on categorical variables in general.

Thanks,

Guy Bayegnak, M.Sc. P.Geol,
Supervisor Groundwater Quality
Senior Hydrogeologist
Groundwater Policy | Water Policy Branch | Alberta Environment and Parks | 780 644 8368
7th Floor, Oxbridge Place | 9820 -106 street Edmonton Alberta T5K 2J6 | Canada


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