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Message-ID: <a6821d990508250758301945ed@mail.gmail.com>
Date: 2005-08-25T14:58:47Z
From: A Mani
Subject: A. Mani : Tapply

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