> # 2. create one new row for each case in level.1 and level.2
>
> # the new reshaped data.frame would should look like this:
>
> # indiv factor covar case.id
> # A level.1 4.614105 1
> # A level.1 4.614105 2
> # A level.2 31.064405 1
> # A level.2 31.064405 2
> # A level.2 31.064405 3
> # A level.2 31.064405 4
> # A level.1 19.185784 1
> # A level.2 48.455929 1
> # A level.2 48.455929 2
> # A level.2 48.455929 3
> # etc...
>
> #############################
This works for me.
melt(my.dat,id=c("indiv","covar.1","covar.2"))->my.dat.1
names(my.dat.1)[4:5]<-c("level","case.id")
melt(my.dat.1,id=c("indiv","level","case.id"))->my.dat.2
Vikas
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