How can I find a measure of goodness of fit (let's say an R2) of a model fitted to a variogram by the function variofit using the geoR package?
The only value I have is the "minimised weighted sum of squares". Is it possible to obtain the R2 from this value? If so, how do I do that?
And, also, how do I find this same value in the case of a manual fit (using the eyefit function or manually specifying the parameters in the lines.variomodel function)?