Have you considered using split? -Ista
On Sun, Nov 8, 2009 at 7:23 PM, rusers.sh <rusers...@gmail.com> wrote: > Hi Rusers, > I hope to divide the original dataset into several subsets and output > these multilple datasets. But errors appeared in my loops. See example. > ###### > a<-c(1:10) > b<-c(rep(1,3),rep(2,3),rep(3,4)) > c<-data.frame(a,b) #c is the example data > num<-c(unique(b)) > # I hope to get the subsets c_1.csv,c_2.csv and c_3.csv > #Errors > for (i in num) { > c_num<-c[c$b==num,] > write.csv(c_num,file="c:/c_num.csv") > } > > Warning messages: > 1: In c$b == num : > longer object length is not a multiple of shorter object length > 2: In c$b == num : > longer object length is not a multiple of shorter object length > 3: In c$b == num : > longer object length is not a multiple of shorter object length > I think the problem should be file="c:/c_num.csv", anybody has ever met > this problem? > Thanks very much. > ----------------- > Jane Chang > Queen's > > [[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, minimal, self-contained, reproducible code. > -- Ista Zahn Graduate student University of Rochester Department of Clinical and Social Psychology http://yourpsyche.org ______________________________________________ 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.