Character filename of output file, with the
attribute of the separator
Arguments
subjects
(character) vector of subjects
inputs
(character paths) vector of input filenames,
e.g. aseg.stats.
outfile
(character) output filename
measure
(character) measure to be calculated
sep
(character) separator for the output file. This will be
an attribute of outfile
skip
(logical) if subject does not have parcellation,
should the command skip that subject (TRUE) or error
(FALSE)
subj_dir
(character path) if a different subjects directory
is to be used other than SUBJECTS_DIR from shell, it can be
specified here. Use with care as if the command fail, it may not reset
the SUBJECTS_DIR back correctly after the error