On 8/21/07, Thomas Goddard <goddard@cgl.ucsf.edu > wrote:

Hi Magali,

   The Chimera "fit model in map" does a real-space local optimization.
  It applies rigid rotations and translations to maximize the average
map value at the atom positions.  It uses gradient descent.

   Here is info on how to use it and reference documentation:

http://www.cgl.ucsf.edu/chimera/tutorials/volumetour/volumetour.html#fitmodel
http://www.cgl.ucsf.edu/chimera/docs/ContributedSoftware/fitmodels/fitmodels.html

    Tom