[Chimera-users] Angles

Eric Pettersen pett at cgl.ucsf.edu
Mon Nov 5 16:13:17 PST 2007

On Nov 5, 2007, at 12:24 PM, Hernando Sosa wrote:

> Hi,
> I have a couple of questions:
> Is there a simple  way to determine the angle between  any of the  
> three
> axes, X,Y or Z and the line connecting two selected atoms?. I know you
> can use the Angles/Torsions tools to determine the angle formed  
> between
> 3 sets of atoms, but I wonder if  you could use that tool, or some
> other,  to  report the angle of two atoms with the axes?.

Hi Hernando,
	Perhaps you could explain in more detail what you want to determine  
here.  AFAIK, there is no unique angle between non-intersecting lines  
in 3-space.

> Is it possible to draw a box with the axes around a structure as it  
> can
> be done with a volume ?.

There is no command or GUI for it, but in Python pretty much anything  
is possible.  I've appended a Python script that will draw axis- 
aligned bounding boxes of currently selected molecules (or all  
molecule models if none are selected).  Just open it with File...Open  
or the "open" command.


                         Eric Pettersen
                         UCSF Computer Graphics Lab

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