ref card for data manipulation?
On Thu, 11 Dec 2008 15:19:03 +0100, hadley wickham <h.wickham at gmail.com> 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.
I like the idea, but is a reference card really enough? To me, what most people need to tackle data manipulation problems is a broad strategy, not a list of useful functions.
Absolutely agree. A list of useful strategies is an excellent idea :). A wiki page for discussion? May be clipping some conceptual passages from your reshape and plyr documentation is a good start? And other "strategy" ideas will start flowing soon. Vitalie.