[Gstat-info] I: Cross Validation

[Edzer Pebesma]

Try to use unnamed arguments (remove the model= and data=), and remove
the database$
--
Edzer

giuseppeform at libero.it wrote:
> I'am trying to do cross validation in this way:
>
>   
>> krige.crossv <-krige.cv
>>     
> (database$Cd~1,model=model5.out,data=database)
> where database$Cd are the value 
> of mesurement Cd concentrations
>               model is my semivariogram
>
>               database is the dataframe 
>
> and the new error is:
>
>   
>>> source("or.
>>>       
> R")
>   
>> Warning: singular model in variogram fit
>> [using ordinary kriging]
>>
>>     
>
>   
>> Errore in function (classes, fdef, mtable)  : 
>>  unable to find an inherited 
>>     
>
>   
>> method for function "krige.cv", for signature "formula", "missing"
>>     
>
>
> can you 
> help me?
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> Gstat-info at geo.uu.nl
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>   

-- 
Edzer Pebesma
Institute for Geoinformatics (ifgi), University of Münster
Weseler Straße 253, 48151 Münster, Germany. Phone: +49 251
8333081, Fax: +49 251 8339763 http://ifgi.uni-muenster.de/
http://www.springer.com/978-0-387-78170-9 e.pebesma at wwu.de