Thanks for your help. Unfortunately when I try it this generates an error as follows:
> randomSamples<-lapply(1:2000,function(){ + meta_comp[sample(nrow(meta_comp),nTimes),]}) Error in FUN(1:2000[[1L]], ...) : unused argument(s) (1:2000[[1]]) jholtman wrote: > > nTime <- 15 # how many samples to take > randomSamples <- lapply(1:2000, function(){ > largeDF[sample(nrow(largeDF), nTimes),] > }) > > This will create a list of 2000 dataframes with the samples > > On Sun, Sep 27, 2009 at 10:45 PM, ewaters <ewat...@nchecr.unsw.edu.au> > wrote: >> >> I have a large data frame, 77 rows, with 10 columns. Each row represents >> a >> unique individual with 10 characteristics, some of which are categorical >> factors and some continuous numeric variables. Each of the ten variables >> is >> important (the 10 columns obviously correspond to the individuals of >> interest). Importantly, this data set represents a population (not >> sample) >> of people with a certain medical condition. >> >> What I want to do is to select 2000 random samples of between 2 and 24 >> individuals, preserving all the information. >> >> I can easily write loops that will sample from 1:77 2 - 24 times, what I >> really want to know is there any way to easily link the output of loops >> like >> that to the data set so I don't have to trawl through and do it manually >> 2000 times? >> >> Any advice on whether I should even attempt that in R, or try some sort >> of >> hash table in C or somewhere, would be appreciated. >> -- >> View this message in context: >> http://www.nabble.com/A-programming-question---is-what-I-want-to-do-possible-in-R--tp25639955p25639955.html >> Sent from the R help mailing list archive at Nabble.com. >> >> ______________________________________________ >> 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, minimal, self-contained, reproducible code. >> > > > > -- > Jim Holtman > Cincinnati, OH > +1 513 646 9390 > > What is the problem that you are trying to solve? > > ______________________________________________ > 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, minimal, self-contained, reproducible code. > > -- View this message in context: http://www.nabble.com/A-programming-question---is-what-I-want-to-do-possible-in-R--tp25639955p25655666.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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, minimal, self-contained, reproducible code.