[Chimera-users] Measuring Distances in Chimera

Elaine Meng meng at cgl.ucsf.edu
Tue Jan 19 10:50:28 PST 2010

Hi John,
There are several ways to select atoms, but I guess you mean "picking"  
them from the screen.  By default, picking two atoms would be done  
with Ctrl-click on the first atom, then Shift-Ctrl-click on the  
second.  The shift is needed to add to the selection instead of  
replacing it.

How to select is described here:

and in the getting started tutorial

Or, if you are looking at the Distances tool, you could press its Help  
button to see its man page, which lists the ways to add the  
measurement and includes links to the selection page.

I hope this helps,
Elaine C. Meng, Ph.D.
UCSF Computer Graphics Lab (Chimera team) and Babbitt Lab
Department of Pharmaceutical Chemistry
University of California, San Francisco

On Jan 19, 2010, at 5:02 AM, Beale, John wrote:

> Hello,
> I am trying to measure distances between atoms using the Tools ->  
> Structure Analysis -> Distances routine. Chimera is requesting that  
> two atoms must be selected in the main graphics window for this to  
> work. I can’t figure out how to select the atoms. Can someone help me?
> John

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