ref card for data manipulation?
Hi, Good idea, what do you say we try and write a page on this in the R wiki? I started the topic: http://wiki.r-project.org/rwiki/doku.php?id=guides:overview-data-manip Once the content is there, it wouldn't be much of an effort to create a reference-card format if required. Best wishes, baptiste
On 11 Dec 2008, at 12:38, Vitalie Spinu wrote:
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.
_____________________________ Baptiste Augui? School of Physics University of Exeter Stocker Road, Exeter, Devon, EX4 4QL, UK Phone: +44 1392 264187 http://newton.ex.ac.uk/research/emag