Hi Kyle,

Using "Values at Atom Positions" (http://www.rbvi.ucsf.edu/chimera/docs/ContributedSoftware/density/density.html) will create an atom attribute corresponding to the density value at each atom position. Then you should be able to use "Select by attribute" to select all atoms above/below the desired threshold.

Cheers,

Oli.

Dear Chimera-dev and users,

Does anyone now of a way to select only the atoms of a PDB that fall inside the displayed density of a volume?

Thanks in advance!

Best wishes,
Kyle