check_fs_result: Check Freesurfer Result
Description
Checks the Freesurfer system command result and will
stop or warning based on whether output files exist.
Usage
check_fs_result(res, fe_before, fe_after)
Value
No return value, called for side effects
Arguments
- res
(numeric) Result from system command
- fe_before
(logical) did the output file exist before the command ran
- fe_after
(logical) did the output file exist after the command ran