I was wondering whether there is a way to create an overlapping fixel mask of 2 separate analyses?
To compute the intersection of 2 binary fixel masks, you can simply use
mrcalc, as long as both masks are of course defined for the same set of fixels (i.e. have the same
directions.mif file). If you don’t have binary masks yet, you’d first get them from e.g. your FBA results by applying
mrthreshold with the
-abs option to the relevant FBA output (e.g. the p-value map). Then simply run
mrcalc mask1.mif mask2.mif -min intersectionmask.mif to compute the intersection. Make sure the output ("
intersectionmask.mif") also ends up in a folder with the same
directions.mif files (or copies of them). Similarly, if you’d be after the “union” mask (rather than the intersection), you can use
mrcalc, but with the
Thanks. It was exactly what I was looking for.