[R] lme: Can not find groupData object in a function could this be a scoping problem?

[JS Huang]

Hi,

  Unless you defined SS somewhere before you execute "data <-
data.frame(group=c(rep("Cont",SS),rep("Exp",SS)), pre=pre,post=post)", SS is
not assigned.  Maybe it is TS you intended?

doit<- function(TS,rho,premean,presd,RxEffect) { 
. 
. 
. 
  # Prepare data frames for regression analyses. 
  data <- data.frame(group=c(rep("Cont",SS),rep("Exp",SS)), 
                   pre=pre,post=post)   



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