Message-ID: <op.ulzz1sivw9ljuw@tir-070312.staff.few.eur.nl>
Date: 2008-12-11T12:38:06Z
From: Vitalie S.
Subject: ref card for data manipulation?
In-Reply-To: <493FFC87.7080101@biostat.ku.dk>
On Wed, 10 Dec 2008 18:29:43 +0100, Peter Dalgaard <P.Dalgaard at biostat.ku.dk> wrote:
>
> You (as many before you) have overlooked the ave() function, which can
> replace the ordering as well the do.call(c,tapply(....))
>
Majority of questions on this list concern data manipulation. Many are repetitive. "Overlooking" like that will always happen unless some comprehensive data manipulation documentation is made.
I think many people would benefit if a specialized data.manip ref.card were conceived.
Tom Short's card is an excellent one but it does not cover high level packages like plyr, reshape, DoBy, and a few base data.manip functions are not there as well.
Vitalie.