[Chimera-users] Fitting model into map

[Elaine Meng]

Hi Dieter,
As you saw, the Fit in Map graphical interface only has local optimization, but its help page mentions that the "fitmap" command has additional features that the GUI does not, including global search.
<http://www.rbvi.ucsf.edu/chimera/docs/ContributedSoftware/fitmaps/fitmaps.html>

So in addition to Greg's suggestion of segmenting first, you may also want to take a look at the "fitmap" command:
<http://www.rbvi.ucsf.edu/chimera/docs/UsersGuide/midas/fitmap.html>

I hope this helps,
Elaine
-----
Elaine C. Meng, Ph.D.                       
UCSF Chimera(X) team
Department of Pharmaceutical Chemistry
University of California, San Francisco

> On Apr 22, 2020, at 6:31 AM, Greg Pintilie <gregdp at gmail.com> wrote:
> 
> 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 at 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