[R] A. Mani : Tapply

From: A Mani <a.manigs_at_gmail.com>
Date: Fri 26 Aug 2005 - 00:58:47 EST


Hello,

        Is it safe to use tapply when the result will be of dim 20000 x 10000 or more ? In my PC R crashes. The code used was on a 3-col data frame with two factor cols and a numeric column. The fn was diff .
data form being <A, B, Num>
tapply(data$A, list(data$A, data$B), diff)

-- 
A. Mani
Member, Cal. Math. Soc

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Received on Fri Aug 26 02:48:22 2005

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