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ok -- since no objections (but no blessings either) -- I have uploaded derived atlas in a separate binary package fsl-harvard-oxford-cortical-lateralized-atlas with fsl-atlases package only recommending it (not depending on it strongly). Enjoy On Fri, 19 Apr 2013, Yaroslav Halchenko wrote: > Dear FSL People, > Echoing my previous emails and recent update of atlases shipped with FSL, I > have cooked up a simple derived atlas: Harvard-Oxford Cortical > (Lateralized) which I am considering to upload as a part of > fsl-harvard-oxford-atlases binary package in NeuroDebian. > Its difference from the stock Harvard-Oxford Cortical is simple: all areas are > now present twice, separately for left and right hemisphere. > Probabilities are computed based on liberalization probability within HO > subcortical atlas shipped with FSL. > Due to int8 rounding, probabilities in Lateralized atlas for some voxels > might not add up exactly to the probability in non-Lateralized version > and be a percent less in the sum. > Representative voxel for each area is the one with maximal probability and > closest to the geometrical center of the area (if there are multiple such > voxels). > Areas are sorted by the area and not by hemisphere. > Such derived atlas would be always regenerated if updates to the > Harvard-Oxford atlases would follow, and there are few basic assertions > in the code to verify that it remains "correct". Here is the code I > cooked up for this purpose: > http://anonscm.debian.org/gitweb/?p=pkg-exppsy/fsldata.git;a=blob;f=debian/fsl-harvard-oxford-cortical-lateral;h=4a40f5896a3bca5ef9ea89d4821562ba4b41c526;hb=_enh/harvard-oxford-lateralized > And you can investigate the generated volumes/atlas (xml): > http://www.onerussian.com/tmp/HarvardOxford-Cortical-Lateralized-20130419.tar.gz > Please let me know if you have any objections, e.g. you would advise to ship > generated atlas in a separate binary package, e.g. > fsl-harvard-oxford-atlases-derived to disambiguate on the origins of the atlas > etc. Or if you spot some mistakes. > Thank you in advance -- Yaroslav O. Halchenko, Ph.D. http://neuro.debian.net http://www.pymvpa.org http://www.fail2ban.org Senior Research Associate, Psychological and Brain Sciences Dept. Dartmouth College, 419 Moore Hall, Hinman Box 6207, Hanover, NH 03755 Phone: +1 (603) 646-9834 Fax: +1 (603) 646-1419 WWW: http://www.linkedin.com/in/yarik