Hi Daniel,
Thank you for your reply. And i did this and it worked!
auto_warp.py -base TT_N27+tlrc. -input subjectdata.nii -skull_strip_input no -warp_dxyz 2 -output_dir subjectdata -affine_input_xmat ID
Just a side note, this is what says on the auto_warp.py manual, and my interpreation of "-skull_strip_input" is "Do not skullstrip input dataset", and by choosing yes, i thought it meant "yes, Do not skullstrip input dataset."
-skull_strip_input
use: Do not skullstrip input dataset
allowed: yes, no
default: no
Thank you again for your help!
Best,
Kitty