Ah, but note that the OP's 2nd column is character, not numeric... And we don't know what the "struct" is (a matrix or data frame?? --does the OP know the difference?). Has Alaios perused "An Introduction to R" where he/she might have gained some enlightenment that would have obviated the need to post?
-- Bert On Tue, Sep 11, 2012 at 8:00 AM, Berend Hasselman <b...@xs4all.nl> wrote: > > On 11-09-2012, at 13:13, Alaios wrote: > >> Dear all, >> I am having a struct that contains on the first column file names and on the >> second column a number which is a "rating" of the file on first column >> >> A small subset looks like that >> >> small >> [,1] >> [1,] "/storage/storage0/59Off.Rtable" >> [2,] "/storage/storage0/5912On.Rtable" >> [3,] "/storage/storage0/5912314ff.Rtable" >> [,2] >> [1,] "0.220386301811093" >> [2,] "0.405237035258638" >> [3,] "0.288659374128626" >> >> >> I want based on the values of column two to rearrange table elements by >> keeping though the row elements together. >> For example if I order those in ascending order should look like >> >> small >> >> [,1] >> [1,] "/storage/storage0/59Off.Rtable" >> [2,] "/storage/storage0/5912314ff.Rtable" >> [3,] " /storage/storage0/5912On.Rtable" >> >> [,2] >> [1,] "0.220386301811093" >> [2,] "0.288659374128626" >> [3,] "0.405237035258638" >> >> I have tried with sort, sort.list and order but I have failed . >> I do not quite undestand how one can complete this task in R. >> Could you please spend some time helping me? > > > Please provide data using dput. > You can do it using order() like this > > small <- data.frame(file.name=c( > "/storage/storage0/59Off.Rtable", > "/storage/storage0/5912On.Rtable", > "/storage/storage0/5912314ff.Rtable"), stringsAsFactors=FALSE, > value=c( > 0.220386301811093, > 0.405237035258638, > 0.288659374128626) > ) > > v.index <- order(small[,"value"]) > small <- small[v.index,] > small > > Berend > ______________________________________________ > 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. -- Bert Gunter Genentech Nonclinical Biostatistics Internal Contact Info: Phone: 467-7374 Website: http://pharmadevelopment.roche.com/index/pdb/pdb-functional-groups/pdb-biostatistics/pdb-ncb-home.htm ______________________________________________ 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.