Re: [R] data.table evaluating columns

2010-03-03 Thread Matthew Dowle
That in itself is a question for the maintainer, off r-help. When the posting guide says "contact the package maintainer first" it means it literally and applies even to questions about the existence of a mailing list for the package. So what I'm supposed to do now is tell you how the posting

Re: [R] data.table evaluating columns

2010-03-03 Thread Rob Forler
Okay I appreciate the help, and I appreciate the FAQ reminder. I will read the r-help posting guide. I'm relatively new to using the support systems around R. So far everyone has been really helpful. I'm confused as to which data.table "list" I should be using. http://lists.r-forge.r-project.org/p

Re: [R] data.table evaluating columns

2010-03-03 Thread Matthew Dowle
I'd go a bit further and remind that the r-help posting guide is clear : " For questions about functions in standard packages distributed with R (see the FAQ Add-on packages in R), ask questions on R-help. If the question relates to a contributed package , e.g., one downloaded from CRAN, try

Re: [R] data.table evaluating columns

2010-03-02 Thread Tom Short
On Tue, Mar 2, 2010 at 7:09 PM, Rob Forler wrote: > Hi everyone, > > I have the following code that works in data frames taht I would like tow > ork in data.tables . However, I'm not really sure how to go about it. > > I basically have the following > > names = c("data1", "data2") > frame = data.f

[R] data.table evaluating columns

2010-03-02 Thread Rob Forler
Hi everyone, I have the following code that works in data frames taht I would like tow ork in data.tables . However, I'm not really sure how to go about it. I basically have the following names = c("data1", "data2") frame = data.frame(list(key1=as.integer(c(1,2,3,4,5,6)), key2=as.integer(c(1,2,3