data processing and Denzo!!

Zbyszek Otwinowski zbyszek at
Wed Feb 7 20:55:26 EST 1996

Fan Yang wrote:
> Zbyszek Otwinowski (zbyszek at wrote:
> : It makes perfect sense to 'refine partiality' in Denzo, even if you have
> : all partial data set.
>    So, I think the data can be treated as usual when running Denzo. Is this
> also true for scalepack? Is there any special command in Scalepack to deal
> with a data set containing no fully  recorded reflections?
> Thanks a lot.
> Fan Yang
> Rice University.

There is no need for special command in scalepack to process partial data set.
However, in such cases it may be very helpful to add:

scale restrain 0.02
b restrain 0.2

To restrain scale and b factors. If frames are quite narrow, there may be
not enough observations to define relative on all frames.

scale restrain 0.02 assumes expectation of about 2% change of relative
scale factor between frames, b restrain 0.2  assumes expectation of
b factor changing by 0.2A**2 between frames. 
  Zbyszek Otwinowski                     |        zbyszek at
  University of Texas                    |        tel : (214)-648-5098 
  Southwestern Medical Center            |        fax : (214)-648-5095 
  5323 Harry Hines Boulevard  Dallas, Texas  75235-9038

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