write.table到新目录

Question

Is there any way to use write() and write.table() so that the output file is in a different directory than the working directory? It tried setting the path to the output file before the filename, and just get an error message.

Answer 1

If you're using windows, R will know to go outside the current directory if it sees C:/ first (presumably other mounted drives too). With Macs it will go outside the current wd if it sees / . So:

1. Mac OS X:

    write.table(foo, file="/users/name/folder/filename.ext") 

2. Windows

    write.table(foo, file="C:/users/name/folder/filename.ext") 

Always test to make sure you have the path right first!

list.files("C:/...")
list.files("/....")       #Give errors if path doesn't exist as typed

So if you're in /users/parent/subdir and you want to reference something in parent , you must type out the full path - write.table(foo, "parent/name.ext") will tell R to make a file: /users/parent/subdir/parent/name.ext .

Answer 2

Sure:

write.table(foo,file="../bar/baz.txt")

Or you can use absolute paths - nomenclature will depend on your operating system.