You could try Segment Map followed by Fit to Segments (both in the Tools -> Volume Data menu). More details and a tutorial here if needed:
https://cryoem.slac.stanford.edu/ncmi/resources/software/segger

Greg


On Apr 22, 2020, at 8:24 AM, Dieter Blaas <dieter.blaas@meduniwien.ac.at> wrote:

Hi,

    I always spend many hours placing a pdb model into a density map of a virus with Tools > Volume Data > Fit in Map. Usually I have to move the model around to find a more or less good fit manually, otherwise Chimera does not find anything. I also tried by first making a molmap followed by something like 'fitmap #0 #1 resolution 4'. I am convinced that there is a better way of doing this but so far I was unable to find it. Can anybody please give me a quick hint!

Thanks, Dieter

------------------------------------------------------------------------
Dieter Blaas,
Max Perutz Laboratories
Medical University of Vienna,
Inst. Med. Biochem., Vienna Biocenter (VBC),
Dr. Bohr Gasse 9/3,
A-1030 Vienna, Austria,
Tel: 0043 1 4277 61630,
Mobile: 0043 699 1942 1659
e-mail: dieter.blaas@meduniwien.ac.at
------------------------------------------------------------------------

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