[R] Save printed/plotted output to different directory

[Rich Shepard]

   I run analyses in one directory and keep images and textual output in
other directories. My test involving a pdf output specifying an output
directory relative to the cwd produced a blank image. The command was like
this:
pdf('../images/filename.pdf')

   Will R accept an absolute path to an output directory or none at all?

TIA,

Rich