[R-sig-Geo] geoR

[Ruben Roa]

-----Original Message-----
From:	r-sig-geo-bounces at stat.math.ethz.ch on behalf of Ole F. Christensen
Sent:	Fri 3/4/2005 3:53 PM
To:	Anders Malmberg
Cc:	R-sig-Geo at stat.math.ethz.ch
Subject:	Re: [R-sig-Geo] geoR
Dear Anders

* The maximum likelihood estimate of the partial sill parameter sigmasq 
can be expressed explictly as function of the other covariance parameters.
Therefore parameter estimate for sigmasq is NOT found by numerical 
maximisation, and as consequence in likfit you cannot specify that that 
sigmasq should be within certain limits.

* The parameter estimate for the relative nugget tausq.rel is found by 
numerical maximisation. Therefore you can specify that this parameter 
should be within certain limits.

Best

Ole

----------------
I understand that the range parameter phi is also a 'free parameter'. Am i correct?

Another quick question: i haven't been able to obtain the estimation variance of the phi parameter estimate as i do for the beta estimate with likfitobject$beta.var. What is the necessary command?
Cheers

Ruben

[snip Anders Malmberg's original question]