[R] ref card for data manipulation?

Vitalie Spinu vitosmail at rambler.ru
Thu Dec 11 13:38:06 CET 2008

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.


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