[Chimera-users] [chimera-dev] fit map in map -- also fit a/pix at the same time ?

[Tom Goddard]

Hi Stefan,

  Chimera cannot optimize the volume grid spacing when fitting a 
molecule model.  I agree that would be useful.  I'll add it to our 
requested features list.

    http://www.cgl.ucsf.edu/chimera/plans.html

You can do this scale optimization by hand using the volume dialog 
Coordinates panel to change the voxel size (press the return key after 
you change the number), then press the Fit button on the Fit in Map 
dialog.  With small scale changes the fit should converge each time and 
you can quickly try several different scales.  The newer Chimera 
releases (Jan 31, 2008, 1.2492) available on the daily builds page can 
make a simulated map for your molecule at the desired resolution and 
report correlation coefficients which is probably better than average 
map values for this scale optimization.

    Tom