Hi,
I have two data frames. One is like
> dtf = data.frame(y=c(rep(2002,4), rep(2003,5)),
+ m=c(9:12, 1:5),
+ def=c(.74,.75,.76,.78,.80,.82,.85,.85,.87))
and the other
dtf2 = data.frame(y=rep( c(2002,2003),20),
m=c(trunc(runif(20,1,5)),trunc(runif(20,9,12))),
inc=rnorm(40,mean=300,sd=150) )
What I want is to divide dtf2$inc by dtf1$def by the "levels" of y and m
(inc is income and def is the deflator). Any help in vectorizing this is
welcome.
Thank you,
Dimitri
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