[R] implementing user defined covariance matirx

[Thilo Kellermann]

maybe the help of one of the corrStruct classes is of interest to you:
?corCompSymm
?corSymm
?corAR1
?corCar1
?corARMA
?corExp
?corGaus
?corLin
?corRatio
?corSphere

Good luck,
Thilo


On Wednesday 26 July 2006 17:34, Jonathan Smith wrote:
> I am trying to implement my own covariance matrix into R.    Then be able
> to use it in gls or lme or nlme to analyze some data.  I simply want to use
> corr=mymodel(form ~tim/peep) same as can use corr= corAR1 and many others.
> Having a terrible time trying to figure out how to do this.   I have found
> documentation saying that you can do this but cant find out how.  Any
> suggestings would be greatly  appreciated.
>
> My covariance matrix is:
> | 1	s1^g  	s2^g 	s3^g	… |
> | s1^g	 1	s1^g	s2^g	… |
> | s2^g	s1^g	 1	s1^g    ... |
> | s3^g	s2^g	s1^g	1 	… |
>
> Thankyou kindly for your time
> Jonathan Smith

-- 
________________________
Thilo Kellermann
Department of Psychiatry und Psychotherapy
RWTH Aachen University
Pauwelstr. 30
52074 Aachen
Tel.: +49 (0)241 / 8089977
Fax.: +49 (0)241 / 8082401
E-Mail: tkellermann at ukaachen.de