[R] Variable as a filename

Hi R community, I have a question. I have 5 files in a directory. Each file has a year as a name (file 1 -2004, file 2- 2005, ...). I want to build a for loop where I call first file, do some calculations, go to second file, do some calculations, etc. Somethin like this: year-2003 nfiles -

Re: [R] Variable as a filename

Hi, The short answer would be ?paste (as in paste(year, .csv, sep=) ), but I'd suggest you try this instead, lf - list.files(pattern = .csv) lf # [1] 2003.csv 2004.csv 2005.csv ln - gsub(.csv, , lf) ln # [1] 2003 2004 2005 length(ln) lapply(lf, read.csv) ?list.files ?lapply HTH, baptiste