[phenixbb] Geometry Restraints - Anisotropic truncation

Phil Evans pre at mrc-lmb.cam.ac.uk
Mon Apr 30 01:22:57 PDT 2012

Are anisotropic cutoff desirable? 

On 29 Apr 2012, at 18:06, Nathaniel Echols wrote:

> On Sun, Apr 29, 2012 at 9:30 AM, Leonid Sazanov
> <sazanov at mrc-mbu.cam.ac.uk> wrote:
>> Hi, so will we see now the possibility to apply anisotropic resolution
>> limits truncation in Phenix?
> It wouldn't be difficult to implement - maybe a few dozen lines of
> code.  It certainly seems less dangerous than providing a
> general-purpose program for anisotropy-correcting data, which we've
> resisted adding for a long time because it's prone to abuse.  I think
> a lot of people use the UCLA server blindly because they think it's
> magically going to make their refinement better, whether or not they
> actually need it.  My feeling is that the truncation is really better
> left to the data processing software, however; I'm not sure what the
> options are there.
> -Nat
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