[R] ref card for data manipulation?

baptiste auguie ba208 at exeter.ac.uk
Thu Dec 11 14:49:14 CET 2008


Good idea, what do you say we try and write a page on this in the R  

I started the topic:

Once the content is there, it wouldn't be much of an effort to create  
a reference-card format if required.

Best wishes,


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 Auguié

School of Physics
University of Exeter
Stocker Road,
Exeter, Devon,

Phone: +44 1392 264187


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