[R] R: machine for moderately large data

Dear all, I would like to ask your advice about a suitable computer for the following usage. I (am starting to) work with moderately big data in R: - cca 2 - 20 million rows * 100 - 1000 columns (market basket data) - mainly clustering, classification trees, association analysis (e.g. libraries

[R] association of multiple variables

- - Zdenìk Skála INCOMA GfK [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented

[R] write list to ascii

Dear all, apologies for this (perhaps recurrent) question but I did not found a question when searching mailing lists. How to write a list of a simple kind, e.g.: abc <- list(one=(1:2), two=(1:5)) # to a file? I understand that write() & co. cannot work but when I try sink("aa.txt", append=T,

Re: [R] write list to ascii

Dear Chris, many thanks! This is just what I had in mind! (namely the 'sapply' solution). Thank you and best regards! Zdenek -Original Message- From: Chris Campbell [mailto:ccampb...@mango-solutions.com] Sent: Thursday, July 19, 2012 4:11 PM To: Skála, Zdeněk (INCOMA GfK)

[R] output by(...)

Dear all, I have a question that is probably pretty stupid, so apologies in advance... I do a simple > mydata.tab <- by(my.data.frame, my.data.frame$category, colMeans) ...works fine, but I need to output the results to some "flat" file (kind of table) to work with it in Excel etc. So I am do

Re: [R] output by(...)

perfect, thanks a lot! :o) -z Odesílatel: Gabor Grothendieck [ggrothendi...@gmail.com] Odesláno: 25. března 2012 12:27 Komu: Skála, Zdeněk (INCOMA GfK) Kopie: r-help@r-project.org Předmět: Re: [R] output by(...) 2012/3/25 Skála, Zdeněk (INCOMA GfK