Naming files in R loop

Question

I have multiple audio files which are held in several subfolders in my working directory. I have a loop which reads in the first minute of each file and then saves them as a new

Answer 1

Thought I would post my solution, which borrows from both @Keith Hughitt 's answer and @lmo 's comments. Thanks to both of them for helping work out what I needed.

for(i in 1:length(FILES)){
 OneMIN <- readWave(FILES[i], from = 0, to = 60, units = "seconds")
 FILE.OUT <- sub("\\.wav$", "_1 min.wav", FILES)
 OUT.PATH <- file.path("New files", basename(FILE.OUT))
 writeWave(OneMIN, filename = OUT.PATH[i])
}

As both implied, I was getting errors because of issues with the paths. I didn't need full.names = TRUE in the FILES assignment, but I did need to include basename() in the loop.

As Keith demonstrated in his answer, the FILE.OUT line is not strictly necessary, but it helps me to keep track of the different steps.