search for: nhypo

Displaying 3 results from an estimated 3 matches for "nhypo".

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2011 Jul 26
3
a question about glht function
...function. My data:data_ori,which inclue CD4, GROUP,time. f_GROUP<-factor(data_ori$GROUP) f_GROUP is a factor of 3 levels(0,1,2,3) result <- lme(sqrt(CD4) ~ f_GROUP*time ,random = ~time|ID,data=data_ori) glht(result, linfct = mcp(f_GROUP="Tukey") ) Error in `[.data.frame`(mf, nhypo[checknm]) : undefined columns selected I can't find out the reason for Error. Any help from you are welcome. Many thanks! [[alternative HTML version deleted]]
2010 Apr 15
0
lme posthoc comparisons in R
...5 87 5.52555 2e-04 D.f 4 87 22.74062 <.0001 C.f:D.f 20 87 3.77657 <.0001 #so now I will try to do posthoc comparisions (if i've done it right?) > posthoclme <- glht(M1lme, linfct = mcp(D.f = "Tukey")) Error in `[.data.frame`(mf, nhypo[checknm]) : undefined columns selected #im not sure why im getting this error, can someone please offer some advice? thanks so much Romina
2010 Dec 02
5
Tukey Test, lme, error: less than two groups
Dear R-group, I am trying desperately to get this Tukey test working. Its my first time here so I hope my question is not too stupid, but I couldn't find anything helpful in the help or in the forum. I am analysing a dataset of treated grasses. I want to find out, if the grasses from different Provenances react differently. In the aov test I found a significance for the combination Treatment