Hi @DanielAsarnow, @donaldb,
Thanks for bringing this up again, you are correct. The last post in this thread explains the current status correctly: Dn symmetry definition diferent as relion/xmipp and maybe others
Unfortunately this becomes non-trivial to change because of all the existing cryoSPARC projects that would have trouble if we switch the Dn symmetry definition.
What would you think of adding a different symmetry definition “Dnx” (so eg D7x) that uses the C2-along-x convention? This would have the drawback that by default, cryoSPARC projects would still have a different symmetry than other programs unless the user knew to enter D7x instead of D7.
Changing the actual definition though would make existing projects break unless the user now enters D7y instead of D7.
Thoughts?