Could somebody help with the definition of new correlation structure for use with a linear mixed-effects model (package nlme). Specifically, I want to define a Toeplitz type correlation structure, but due to my inexperience with programming in R, I feel a bit overwhelmed with the task at hand.
I understand that you can start with a function like corAR1 as template, but I have no idea how I would define the methods (coef, corMatrix, and initialize) in this context. I did a search on Google and in the R-help archives, but have not found much in terms of hints and specific examples for user defined correlation structures. Thank you in advance! Michael Jerosch-Herold ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
