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Matthew: 1 question about marsbar (well 1 question with several subquestions) 1) We have found that marsbar will occasionally fail to find data at the edge of the brain. This seems to occur because of the use of trilinear interpolation in @maroi/getdata.m. Is the use of spm_sample_vol just a holdover from spm99 or to maintain compatibility with spm99? Could you instead use spm_get_data at around line 99 and then just get all the data at once? Is there a reason to use trilinear interpolation as opposed to just using nearest neighbor since most of the time the data are going to be summarized using mean or eigenvector?] thanks, Darren ------------------------------------------------------------------------- Darren R. Gitelman, M.D. Cognitive Neurology and Alzheimer¹s Disease Center Northwestern Univ., 320 E. Superior St., Searle 11-470, Chicago, IL 60611 Voice: (312) 908-9023 Fax: (312) 908-8789 -------------------------------------------------------------------------