Dear Apu,
Compilations of scattering factors in International Tables for X-ray
Crystallography go to sin(theta)/lambda = 2. Use those.
Bob Von Dreele
R.B. Von Dreele
IPNS Division
Argonne National Laboratory
Argonne, IL 60439-4814
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Hi Bill and others
Why cant this question of zero counts be answered in a simple and practical
manner. I hope to read Devinder Sivia's excellent book one day but for the
time being it would be useful if the statistical heavy weights were to
advise on what weighting is appropriate without everyone
Title: RE: About zero counts etc.
Hi Alan,
The short answer is that the question of zero counts can indeed be answered in a simple and practical manner. There's a lot of apparent mystique about probability theory especially when one invokes the term Bayesian probability theory. However, Bay
Title: RE: About zero counts etc.
Hi Bill
Excellent, thank you, I am surprised that I understand
what you are saying for a change.
In other words instead of squaring some function F^2 to
minimize on you instead simply minimize on a more general function G. Its the
squaring that leads to t
1. How the weights are calculated?
wi= 1/variance. How it could be calculated, when there is just a point (at
that angle).
(in genral or in Fullprof)
2. On what basis Re or Rexp is defined?
...model is improper, if gof=Rwp/Re is less than '1'. Why? what does it
mean? Does it have conclusive expla
