[R] A question about corAR1 and grouping

[Jeff Newmiller]

I don't understand your question, but lacking a reproducible example you may not get the attention of those who might be more likely to. 
-- 
Sent from my phone. Please excuse my brevity.

On January 6, 2016 10:55:08 AM PST, Saptarshi Guha <saptarshi.guha at gmail.com> wrote:
>Hello,
>
>I was under the impression that in a call to gls, if i specify
>
>gls(.., cor=AR1(form= ~ 1 | subject))
>
>and suppose there are N subjects, then i would have obtained estimates
>for N Phi (s) (the AR1 coefficient) - but I only get 1 estimate.
>
>I then checked "Linear Mixed-Effects Models Using R" and it i must
>have confused it for the weights(e.g. varIdent) where there are indeed
>group(strata) specific estimates.
>
>Is there a way to include correlations  and have group specific
>estimates?
>
>Regards
>Saptarshi
>
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