[R] correlation structure in lme without random effect
I was hoping to fit along the lines of g-gl(20,5) y-runif(100) fit-lme(fixed=y~g,correlation=corAR1(0,~1|g)) But I get the error Incompatible formulas for groups in random and correlation Any help would be greatly appreciated. Ben __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] correlation structure in lme without random effect
You haven't specified a random equation. Try: fit-lme(fixed=y~g,random=~1|g,correlation=corAR1(0,~1|g)) On 30/10/06, Benjamin Tyner [EMAIL PROTECTED] wrote: I was hoping to fit along the lines of g-gl(20,5) y-runif(100) fit-lme(fixed=y~g,correlation=corAR1(0,~1|g)) But I get the error Incompatible formulas for groups in random and correlation Any help would be greatly appreciated. Ben __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. -- = David Barron Said Business School University of Oxford Park End Street Oxford OX1 1HP __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] correlation structure in lme without random effect
On 10/30/06, Benjamin Tyner [EMAIL PROTECTED] wrote: I was hoping to fit along the lines of g-gl(20,5) y-runif(100) fit-lme(fixed=y~g,correlation=corAR1(0,~1|g)) But I get the error Incompatible formulas for groups in random and correlation Use the gls function in the nlme package to fit a model with correlation but no random effects specification. __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] correlation structure in lme without random effect
Thanks! Douglas Bates wrote: On 10/30/06, Benjamin Tyner [EMAIL PROTECTED] wrote: I was hoping to fit along the lines of g-gl(20,5) y-runif(100) fit-lme(fixed=y~g,correlation=corAR1(0,~1|g)) But I get the error Incompatible formulas for groups in random and correlation Use the gls function in the nlme package to fit a model with correlation but no random effects specification. __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
