"xifti"Remove a brain structure, surface, or subcortical structure from a
"xifti".
remove_xifti(xifti, remove = NULL, remove_sub = NULL)A "xifti" object.
A character vector containing one or more of the following:
"cortex_left", "cortex_right", "subcortical",
"surf_left", and "surf_right". Each of these components will
be removed from xifti.
A vector containing subcortical structures to be removed
from xifti. Can be specified with names, or with numeric factor
values: see substructure_table.
The new "xifti" with the requested component(s) removed
Other functions for manipulating `xifti` objects: 
add_surf(),
apply_xifti(),
combine_xifti(),
convert_to_dlabel(),
merge_xifti(),
newdata_xifti(),
select_xifti(),
transform_xifti()