[phenixbb] lower limits on grid spacing/binning
Terry Lang
terry at lego.berkeley.edu
Mon Oct 29 18:29:13 PDT 2007
Hey Everyone,
I have been told by several crystallographers that the general
rule of thumb for grid spacing when generating a map is one third the
resolution (eg If your crystal structure has a resolution of 1.2 A, your
grid spacing should be 0.4). Is there a mathematical reason why this
ratio should be maintained or is this simply a holdover from slower
computers with lower memory? More importantly for my application, is
there a lower limit on how fine the grid spacing can be? In other
words, is there a lower limit at which one is oversampling the data for
a particular resolution? Any information and/or references would be
greatly appreciated.
Sincerely,
Terry
--
P. Therese Lang
Post Doc
Alber Lab, UC Berkeley
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