, by=list(xx$week), mean)
library(reshape)
mm - melt(xx, id=c(week))
cast(mm, week ~ variable, mean)
John Kane
Kingston ON Canada
-Original Message-
From: revda...@gmail.com
Sent: Fri, 10 Feb 2012 04:55:44 -0800 (PST)
To: r-help@r-project.org
Subject: [R] Need to aggregate large
Hi all,
I have a large dataset with ~8600 observations that I want to compress to
weekly means. There are 9 variables (columns), and I have already added a
week column with 51 weeks. I have been looking at the functions:
aggregate, tapply, apply, etc. and I am just not savvy enough with R to
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