[Chimera-users] (no subject)

[Tom Goddard]

Hi Guiqing,

  The "fit model in map" and "fit map in map" tools (menu Tools / Volume 
Data) report the relative translation and rotation of two models.  But 
if you are not doing a fit I don't know of an easy way to get that 
information.  There is the "matrixget" command that writes rotation and 
translation matrices (3 by 4 matrix) for each model but that would 
require some calculation to extract a rotation angle and translation.

  Do you want the relative orientation between two models, or just the 
absolute orientation of a single model on the screen?  What center of 
rotation do you want?  If you choose a different center of rotation then 
the displacement is different.

  A pretty simple Python script could give the desired information.  
I've attached an example script that you can open in Chimera (use File / 
Open) to report the relative position of two models.

    Tom

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