Saw your PT hitbox thread, nice to see a new approach to things for once on these boards lol.
anyway I figured you should know this before trying to determine disjoints of attacks. believe me, ive wasted countless hours trying to figure this stuff out and still there is no accurate way (afaik) to do this using mere screenshots. The best examples are when you compare dtilt to jab3. While jab3 seems to have a large gap between the hitbox max range and charizard, does not neccesarily mean that the disjoint is that exact length, if someone (say, snake utilt) hitbox happens to reach maximum range inside that gap, it may still his charizard. the reverse may also be possible too, dtilt might have charizards head actually have no hurtbox attached to it, you cant see a disjoint but it can still be there :O
Its probably a good idea to keep this in mind before attempting to produce any images which show the extension of a hurtbox (ie, disjoint) during an attack. I saw someone ask for measuring the disjoint on ftilt and was like "hes gonna have fun trying that
"
Ah well I dont mean to discourage you or anything, if you can find a way to accurately map the disjoint on an attack that would be great. But its a lot more complicated than I ever thought, dont lose sleep over it