Hi,
The within function can be used to modify data.frames (among other objects).
One can even provide multiple expressions to modify the data.frame by more than
one expression. However, when new variables are created, they seem to be
inserted in the data.frame in the opposite order they were declared:
> df <- data.frame(a=1)
> within(df, {b<-a*2; c<-b*3})
a c b
1 1 6 2
Is there a way to insert the variables in an order consistent with the order of
declaration (ie, a, b, c)?
Thanks
Sebastien
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