search for: dtf1

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2006 Jul 12
1
help in vectorization
...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 [[alternative HTML version deleted]]
2007 Jun 20
2
add line to data.frame
Dear R user, how can I update a data.frame adding new lines? I need to create a second data frame from a first one with only some of their entrys filtering the value of a specific column... How can I do this? thankyou very much in advance best regards Manuele PEsenti -- Manuele Pesenti manuele a inventati.org amicogodzilla a jabber.linux.it http://mpesenti.polito.it