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rfilenameswrite.table

Naming output files in R

I'm working in R and I would like to export a txt file putting in its name the value of a particular variable; I read about the command paste and it works perfectly here:

write.table(mydata,file=paste(cn,"data.txt"))

where cn is the value to put at the beginning of the file data.txt. I would like to automatically put this file in an output folder where I keep all the other results. I try to do something like this:

write.table(mydata,file=paste(cn,"./output/data.txt"))

But it doesn't work. Any suggestion?

Solution

  • paste() just creates a string by concatenating the individual values and uses a space as default separator:

    write.table(mydata, file = paste("./output/", cn ,"data.txt", sep = ""))

    or with paste0(...), which is equivalent to paste(..., sep = ""):

    write.table(mydata, file = paste0("./output/", cn ,"data.txt"))