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how is variance defined in krige {gstats}

Hi list/Edzer,

I am trying to determine errors in the krige output and can't find any
documentation on the details of the variance output of krige {gstats}
(variable var1.var of krige output).

How is this variance defined? Basically I am after a way to calculate
other statistics like N, standard error, CV or a probability to describe
the uncertainty of the krige output.

All help appreciated
Thanks
Herry


Dr Alexander Herr
Spatial and statistical analyst
CSIRO, Sustainable Ecosystems
Davies Laboratory,
University Drive, Douglas, QLD 4814 
Private Mail Bag, Aitkenvale, QLD 4814
 
Phone/www 
(07) 4753 8510; 4753 8650(fax)
Home: http://herry.ausbats.org.au
Webadmin ABS: http://ausbats.org.au
Sustainable Ecosystems: http://www.cse.csiro.au/