Jet lagged though i am it is clear that any image is trivially flippable. so that's solved short term, sorry.
in the long term, it is definitely best to change all my caret data to the correct hemispheric designation and orientation. but I think it's not hard: flip surfaces in y with a transform. flip and project and resample borders. just fslswapdim volumes (ACPC is unchanged). rename the structure in surface headers. leave metric, paint etc alone. they are just vectors. rename all the files. update/create spec. done. I think. unless the surfaces or anything else need further header changes. they don't look like they do. other things probably easiest to just backup and do again as needed. registration related stuff, whatever else. but that should flip the surfaces and volumes, preserve the important data (metrics, to a lesser extent borders, paints, rois), and everything should work smoothly and be in the right place. I do actually need to do this. At least for some of them. it turns out that while the caret data is correct, the actual brain is the wrong way round and it's not something called "rigorous" to flip histological data. whatever. talk to the hand. I hope it's that easy as above. I think it hopefully is. best, Colin
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