Displaying 2 results from an estimated 2 matches for "genzcor".
2005 Jun 07
0
user-defined spatial correlation structure in geeglm/geese
...orstr = "userdefined" and zcor = Zcor, with Zcor
being in some way the specified correlation matrix – but how? I earlier
specified spatial exponential correlation structures in glmmPQL, but it
seems that this does not work in the same way for geeglm or geese. Do I need
to use the function genZcor?
3. Makes it sense to use continents to specify clusters? Or is the number of
clusters (8) too low?
I am grate-full for any comments!
Thank you in advance,
Swantje
Swantje Löbel
PhD student
Department of Plant Ecology
Evolutionary Biology Centre (EBC)
Uppsala University
Vil...
2007 May 08
0
Question on bivariate GEE fit
...gma12 sigma2)
sigma1, sigma2 and sigma12 are matrices with
where
sigma1 = sig1 * AR1(rho1)
sigma2 = sig2* AR1(rho2)
sigma12 = sig12 * AR1(rho12)
My question is whether there is any method to fit such data using
packages like gee or geepack (or may be any other package ) in R. The
function genZcor() of geepack can be used to construct correlation but
I have been unable to use it in the present context.
Any help is greatly appreciated.
Regards
Souvik Banerjee
Lecturer
Department of statistics
Memari College
Burdwan
India
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