You can use: > files <- list.files(path = "folder01") > files <- gtools::mixedsort(files)
to order the files in a "human-friendly" order rather than lexicographic order (which sort() provides). FYI 1; it's preferred to use file.path("folder01", list[i]) rather than paste('folder01',lists[i],sep='/'). FYI 2; if you use list.files(path = "folder01", full.names = TRUE), you get the full paths rather name just the file names, i.e. you don't have to use file.path(). /Henrik On Thu, Jun 29, 2017 at 12:04 PM, lily li <chocol...@gmail.com> wrote: > Hi R users, > I have a question about opening the txt files and putting them into a > matrix. The txt files are in the folder01, while they have the name > file.1.txt, file.2.txt, file.3.txt, etc. There are about 200 such text > files. Each txt file contains one value inside. When I tried to use the > code below, I found that the txt files are not in order, from 1, 2, 3, to > 200. Rather, they are in the order 1, 10, 100, 101, etc. How to change it > so that they are in order? Thanks for your help. > > temp <- list.files('folder01',pattern="*.txt" > name.list <-lapply(paste('folder01',temp,sep='/'),read.table,head=F) > library(data.table) > files.matrix <-rbindlist(name.list) > > Also, when use the code below, how to complete it so that the values of the > files are stored in a matrix? > lists = list.files('folder01') > for (i in 1:length(lists)){ > file <- read.table(paste('folder01',lists[i],sep='/'),head=F) > print(file) > } > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > 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. ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.