Dear Dmitry, No, "vop zflip" does not change the resolution. Resampling on different grid points (vop resample) will decrease resolution. However, "vop zflip" is not resampling, just reversing the order of the data planes. The "vop resample" description links to that note about resampling and decreased resolution, but the "vop zflip" description does not. <https://www.rbvi.ucsf.edu/chimera/docs/UsersGuide/midas/vop.html#resample> <https://www.rbvi.ucsf.edu/chimera/docs/UsersGuide/midas/vop.html#zFlip> (You may be interested to know that ChimeraX can also flip, command "volume flip" <https://rbvi.ucsf.edu/chimerax/docs/user/commands/volume.html#flip> ) I hope this helps, Elaine ----- Elaine C. Meng, Ph.D. UCSF Chimera(X) team Department of Pharmaceutical Chemistry University of California, San Francisco
On Jul 9, 2021, at 1:42 AM, Dmitry Semchonok via Chimera-users <chimera-users@cgl.ucsf.edu> wrote:
Dear colleagues, I heard that flipping the map in Chimera with the command
vop zflip #
will decrease the resolution of the map
https://www.cgl.ucsf.edu/chimerax/docs/user/commands/volume.html#notes
Did I understand that statement correctly?
If yes, how to flip the map without losing the quality (resolution)? Thank you Sincerely, Dmitry