Your example is not self-contained, which makes it more difficult
to answer your question.
However, I believe you should be able to answer the question by
studying the examples on the help pages for "gnls" and possibly
"corCompSymm", using the following additional commands:
# To see a list of functions you can apply to objects of class "gnls":
methods(class='gnls')
# With luck, one of these will contain the answer to your question.
# To see the "structure" of the "res" object returned by "gnls".
str(res)
If these hints are not adequate, please provide a minimal,
self-contained example, as requested in the posting guide
"www.R-project.org/posting-guide.html". You should be able to construct
such fairly easily by modifying one of the examples in the "gnls" and
"corCompSymm" help pages.
Hope this helps.
Spencer Graves
Mahbub Latif wrote:
Hello list:
How to extract the value of "Rho" from a gnls() object. I am using gnls()
function similar to
res <- gnls(y~SSmicmen(),correlation=corCompSymm(form~1|b),data=dat)
Thanks in advance,
Mahbub.
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