Re: [R] broken example: lme() + multcomp() Tukey on repeated measures design
Thanks for the helpful replies. I will try updating R and see how it goes. MASS, nlme, multcomp are all the most recent. Bill On Tue, Apr 21, 2009 at 3:12 PM, William Simpson william.a.simp...@gmail.com wrote: I am trying to do Tukey HSD comparisons on a repeated measures expt. I found the following example on r-help and quoted approvingly elsewhere. It is broken. Can anyone please tell me how to get it to work? I am using R 2.4.1. require(MASS) ## for oats data set require(nlme) ## for lme() require(multcomp) ## for multiple comparison stuff Aov.mod - aov(Y ~ N + V + Error(B/V), data = oats) Lme.mod - lme(Y ~ N + V, random = ~1 | B/V, data = oats) summary(Aov.mod) anova(Lme.mod) summary(Lme.mod) summary(glht(Lme.mod, linfct=mcp(V=Tukey))) Error in eval(expr, envir, enclos) : object Y not found Error in factor_contrasts(model) : no 'model.matrix' method for 'model' found! It all went ok until the last line, where the actual Tukey multiple comparisons was requested. Thanks very much for any help! Bill __ R-help@r-project.org 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.
[R] broken example: lme() + multcomp() Tukey on repeated measures design
I am trying to do Tukey HSD comparisons on a repeated measures expt. I found the following example on r-help and quoted approvingly elsewhere. It is broken. Can anyone please tell me how to get it to work? I am using R 2.4.1. require(MASS) ## for oats data set require(nlme) ## for lme() require(multcomp) ## for multiple comparison stuff Aov.mod - aov(Y ~ N + V + Error(B/V), data = oats) Lme.mod - lme(Y ~ N + V, random = ~1 | B/V, data = oats) summary(Aov.mod) anova(Lme.mod) summary(Lme.mod) summary(glht(Lme.mod, linfct=mcp(V=Tukey))) Error in eval(expr, envir, enclos) : object Y not found Error in factor_contrasts(model) : no 'model.matrix' method for 'model' found! It all went ok until the last line, where the actual Tukey multiple comparisons was requested. Thanks very much for any help! Bill __ R-help@r-project.org 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] broken example: lme() + multcomp() Tukey on repeated measures design
William Simpson william.a.simpson at gmail.com writes: I am trying to do Tukey HSD comparisons on a repeated measures expt. I found the following example on r-help and quoted approvingly elsewhere. It is broken. Can anyone please tell me how to get it to work? I am using R 2.4.1. That's the problem. Not the R-Version, but the likelihood that the multcomp package was not updated also, and lme definitively not in early version.s other attached packages: [1] multcomp_1.0-7 mvtnorm_0.9-5 nlme_3.1-90MASS_7.2-46 glht(Lme.mod, linfct=mcp(V=Tukey)) General Linear Hypotheses Multiple Comparisons of Means: Tukey Contrasts Linear Hypotheses: Estimate Marvellous - Golden.rain == 05.292 Victory - Golden.rain == 0 -6.875 Victory - Marvellous == 0 -12.167 Dieter __ R-help@r-project.org 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] broken example: lme() + multcomp() Tukey on repeated measures design
On Apr 21, 2009, at 10:12 AM, William Simpson wrote: I am trying to do Tukey HSD comparisons on a repeated measures expt. I found the following example on r-help and quoted approvingly elsewhere. It is broken. Can anyone please tell me how to get it to work? I am using R 2.4.1. How many years have you had that version without updating? require(MASS) ## for oats data set require(nlme) ## for lme() require(multcomp) ## for multiple comparison stuff Aov.mod - aov(Y ~ N + V + Error(B/V), data = oats) Lme.mod - lme(Y ~ N + V, random = ~1 | B/V, data = oats) summary(Aov.mod) anova(Lme.mod) summary(Lme.mod) summary(glht(Lme.mod, linfct=mcp(V=Tukey))) Error in eval(expr, envir, enclos) : object Y not found Error in factor_contrasts(model) : no 'model.matrix' method for 'model' found! It is not broken when run in version 2.8.1. David Winsemius, MD Heritage Laboratories West Hartford, CT __ R-help@r-project.org 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.
