Graphics

1999-03-30 Thread Hongwu Xu
Hi, Everyone, We have some neutron diffraction data collected and stored in the VAX computer at Argonne, and we want to remotely get access to those data from our Windows-PC or Mac here. However, we were unable to display the diffraction patterns on our computers. Do we need an emulation program

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