R help - Apr 2005 - extracting correlations from nlme

Hi,

I would like to know how (if) I can extract some of the information from 
the summary of my nlme.
at present, I get a summary looking something like this:


 > summary(fit.nlme)

Nonlinear mixed-effects model fit by maximum likelihood
   Model: MLKYLD ~ W4(DIM, logA, B, C)
  Data: ADHIS.x0
     AIC      BIC  logLik
   265314 265401.6 -132647

Random effects:
  Formula: list(logA ~ 1 , B ~ 1 , C ~ 1 )
  Level: ID
  Structure: General positive-definite
             StdDev   Corr
    logA 0.480476962 logA   B
       B 0.140839992 -0.855
       C 0.001706867 -0.523  0.819
Residual 3.164491614


Fixed effects: logA + B + C ~ 1
        Value  Std.Error    DF  t-value p-value
logA 3.005178 0.01025308 41835 293.1000  <.0001
   B 0.091446 0.00296687 41835  30.8223  <.0001
   C 0.002727 0.00003245 41835  84.0336  <.0001


Standardized Within-Group Residuals:
       Min         Q1         Med        Q3      Max
  -5.107463 -0.5581999 -0.01962435 0.5032916 31.28465

Number of Observations: 46831
Number of Groups: 4994

I would like to extract the table of correlations, but have not been able 
to do it.

Any assistance, much appreciated.

Cheers,
Evelyn



Evelyn Hall
PhD Student
Faculty of Veterinary Science
The University of Sydney
PMB 3 Camden, NSW, 2570
Phone: +61 2 9036 7736
Email: evelynw@camden.usyd.edu.au


	[[alternative HTML version deleted]]

>Hi,
>
>I would like to know how (if) I can extract some of the information from
>the summary of my nlme.
This is R. There is no if. Only how.


>at present, I get a summary looking something like this:
>
>  > summary(fit.nlme)
>  [snip]

>
>I would like to extract the table of correlations, but have not been able
>to do it.

ss <- summary(fit.nlme)
ss$corFixed

Cheers,

Simon.
>
>Any assistance, much appreciated.
>
>Cheers,
>Evelyn
>
>
>
>Evelyn Hall
>PhD Student
>Faculty of Veterinary Science
>The University of Sydney
>PMB 3 Camden, NSW, 2570
>Phone: +61 2 9036 7736
>Email: evelynw at camden.usyd.edu.au
>
>
>	[[alternative HTML version deleted]]
>
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-- 
Simon Blomberg, B.Sc.(Hons.), Ph.D, M.App.Stat.
Visiting Fellow
School of Botany & Zoology
The Australian National University
Canberra ACT 0200
Australia

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