Re: Errors in Rietveld refinement

1999-04-13 Thread Daniel M. Toebbens
Okay, it took my some time to figure it out, but here it is: On Tue, 13 Apr 1999, Jon Wright wrote: > > Did this get posted twice? I thought I was waiting to read an explanation > myself, but I could just be going mad guess I'll have a go myself. > > > I have a question concerning the erro

Re: Errors in Rietveld refinement

1999-04-13 Thread Jon Wright
Micheal Did this get posted twice? I thought I was waiting to read an explanation myself, but I could just be going mad guess I'll have a go myself. > I have a question concerning the errors calculated in a rietveld > refinement. As far as I understand, the error of a parameter is calculated

Errors in Rietveld refinement

1999-04-12 Thread Michael Chall
Hello everybody, I have a question concerning the errors calculated in a rietveld refinement. As far as I understand, the error of a parameter is calculated as sigma(p_i) = sqrt(c_ii) * sqrt(chi^2/N-P) (*) where c_ii is the i-th diagonal element of the inverse of the curvature matrix, chi^

Errors in Rietveld refinement

1999-03-30 Thread Michael Chall
Hello everybody, I have a question concerning the errors calculated in a rietveld refinement. As far as I know, the error of a parameter is calculated as sigma(p_i) = sqrt(c_ii) * sqrt(chi^2/N-P) (*) where c_ii is the i-th diagonal element of the inverse of the curvature matrix, chi^2 = su