Hi Vincent, I don't think there's any control for that, but it's pretty simple to hack into the code of your ChimeraX installation. You need to edit a file named structure.py in your installation. To find out where that file is, open ChimeraX's Python shell (Tools→General→Shell) and type:
from chimerax.atomic import structure
structure.__file__
The output from that second line will show where structure.py is on your system. Use an editor to change line 2223 of that file from:
return str(self.atom)
to:
return str(self.atom) + " bfactor %g" % self.atom.bfactor
Make sure to retain the indentation (which is important to Python) and that you write out the file as plain text. Then the next time you start ChimeraX the balloons should show the atom's bfactor information.
--Eric
Eric Pettersen
UCSF Computer Graphics Lab
On Sep 5, 2025, at 2:31 AM, Vincent CHAPTAL via ChimeraX-users <chimerax-users@cgl.ucsf.edu> wrote: