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Re: Expressions for R factors



( sum ( w ( Y(obs) - Y(calc) )^2^ ) )^1/2^
               wR = ( --------------------------------- )
                    (         sum ( w Y(obs)^2^ )       )


 I forgot to change the calc to obs in the denominator. 
 The above form is the correct one.

-- 
Howard Flack        http://www.unige.ch/crystal/ahdf/Howard.Flack.html
Laboratoire de Cristallographie               Phone: 41 (22) 702 62 49
24 quai Ernest-Ansermet             mailto:Howard.Flack@cryst.unige.ch
CH-1211 Geneva 4, Switzerland                   Fax: 41 (22) 781 21 92


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