Once there is node correspondence between the ROI
dataset and the surface datasets, then you should be
able to use normal 3d* programs on them, such as
3dROIstats, which gives stats for one ROI at a time.

To get node correspondence, I believe there are 2
steps (I am not a master of this):

1. Convert the ROI to a niml dataset, e.g.

ROI2dataset -label_dset  lh.NEW.niml.dset -input lh.DRAWN_ROI.niml.roi

2. Create a full dataset that has all nodes (not just
those in the ROI), e.g.

ConvertDset -i lh.NEW.niml.dset -o_NIML -pad_to_node ld120 -prefix FINAL

See the suma.pdf class handout for details, along with
run_ROI2dataset and run_ROIdump in the suma_demo/afni
class data directory.

- rick



Edited 1 time(s). Last edit at 07/22/2014 08:40AM by rick reynolds.