Re: [Ifeffit] Question about transform windows and statistical parameters

2011-05-11 Thread Scott Calvin
Hi Brandon, I don't find this terribly surprising. First, a little background which you may or may not know: Reduced chi-square is a statistical parameter which requires a knowledge of the uncertainty of the measurement to compute. In theory, therefore, it knows that a good fit to noisy

[Ifeffit] EXAFS

2011-05-11 Thread Francisco Garcia
Dear all, I tried computing K-edge chi(k) for a solvated metal ion. For each snapshot, I simply carved out a cluster of radius 6 Ang around the metal. 1. if I set RMAX to say 5.5 in feff.inp, the chi(k) plot looks totally different from the case where the RMAX line is commented out (particularly