GEOSTATS: Trends II
This email is a follow-up to my email to the list of a week ago. I would
like to thank Andrew Lister and Paulo Ribeiro who commented on (i) the
need to adopt different approaches on the basis of the data and other
issues and (ii) the potential of model-based geostatistics in dealing
On the same theme, but more specifically, I would be interested to know
what software list members are using for IRF-k kriging. I am dealing with
quite large data sets (more than 50,000 observations in some cases). I am
aware only of ISATIS, which I am unlikely to be able to access. If all
else fails I will have to write something myself. Also, I have yet to
encounter a satisfactory approach to estimation of the variogram for
universal kriging (where the trend clearly affects the variogram in all
directions), so any suggestions would be gratefully received.
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