[chimera-dev] Changing guide atom - repost

[Patrick Ladam]

Hello list,

I received an answer concerning this topic but via the chimera menus
which I tested in the first place and works fine.
Actually I want to do this from the python shell, so here is my repost:
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I'd like to change the guide atom in
res.ribbonData to use C instead of CA as an example.
Here is what I did:

for r in mol.residues:
  for a in r.atoms:
    if a.name == 'C':
      r.ribbonData.guide = a		# Set C as guide Atom
      if r.isHelix: 			# Update the display 
	r.ribbonDisplay = True
	r.ribbonDrawMode = chimera.Residue.Ribbon_Round

This does not seem to redisplay/recompute the helix through C Atoms,
the helix still goes through CA but not C atoms.

I am not confident with the way I altered the guide Atom or maybe is it
another problem like updating the ribbon or so...
If someone can help...

Thanks to all

PL