Hi Thomas, Here are two suggestions which storage all the files in a list:
# Parameters route <- "/Users/thomasjackson/Data/GEP&CO/GEP&CO" lts <- LETTERS[1:12] toread <- paste(route,lts,"/HPLC_",lts,"12.csv",sep='') # Reading in the data -- option 1 myfiles <- list() for(i in 1:12) myfiles[i] <- read.csv(toread, header=T, sep=',') names(myfiles) <- paste("G&P", lts, sep='') myfiles # Option 2 -- no for() loop myfiles2 <- lapply(toread, read.csv, header=T, sep=',') myfiles2 To access the first file just type either myfiles[[1]] or myfiles2[[1]] For further analysis using each file, the lapply (see ?lapply) function might be useful. HTH, Jorge On Thu, Nov 19, 2009 at 12:29 PM, Thomas Jackson <> wrote: > Dear R Users, > > I am trying to read in a series of csv files which vary by the letter on > the end of he file name. When I input what seems to be a logical for loop I > get an error message that doesn't make sense to me. > > > for(i in 1:12){ paste("G&P", LETTERS[i],sep='') > <-read.csv(paste("/Users/thomasjackson/Data/GEP&CO/GEP&CO",LETTERS[i],"/HPLC_",LETTERS[i],"12.csv",sep=''), > header=T, sep=',')} > > > Error in paste("G&P", LETTERS[i], sep = "") <- > read.csv(paste("/Users/thomasjackson/Data/GEP&CO/GEP&CO", : > target of assignment expands to non-language object > > > For example the first file name is HPLC_A12.csv in the folder GEP&COA > > Thanks for any help, > Thomas Jackson > ______________________________________________ > 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. > [[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.