Steven from iPhone
> On Feb 19, 2024, at 4:56 PM, Steven Yen <st...@ntu.edu.tw> wrote: > > Thanks to all. Glad there are many options. > > Steven from iPhone > >>> On Feb 19, 2024, at 1:55 PM, Rui Barradas <ruipbarra...@sapo.pt> wrote: >>> >> Às 03:27 de 19/02/2024, Steven Yen escreveu: >>> I need to read csv files repeatedly, named data1.csv, data2.csv,… >>> data24.csv, 24 altogether. That is, >>> data<-read.csv(“data1.csv”) >>> … >>> data<-read.csv(“data24.csv”) >>> … >>> Is there a way to do this in a loop? Thank you. >>> Steven from iPhone >>> [[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. >> Hello, >> >> Here is a way of reading the files in a *apply loop. The file names are >> created by getting them from file (list.files) or by a string editing >> function (sprintf). >> >> >> # file_names_vec <- list.files(pattern = "data\\d+\\.csv") >> file_names_vec <- sprintf("data%d.csv", 1:24) >> data_list <- sapply(file_names_vec, read.csv, simplify = FALSE) >> >> # access the 1st data.frame >> data_list[[1L]] >> # same as above >> data_list[["data1.csv"]] >> # same as above >> data_list$data1.csv >> >> >> Hope this helps, >> >> Rui Barradas >> >> >> >> -- >> Este e-mail foi analisado pelo software antivírus AVG para verificar a >> presença de vírus. >> www.avg.com [[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.