[Ifeffit] Re: statistical parameters (Josh Kas)

Hi, I don't know what ifeffit does, but here is a nice paper by Ed Stern which goes through the theory Number of relevant independent points in x-ray-absorption fine-structure spectra. PRB V. 48 Number 13 The conlcusion is that if you are using r-space data that includes r=0 then Nidp = 2dkdR/pi + 1 otherwise, when r=0 is not included in the fit Nidp = 2dkdR/pi + 2 Hope this helps. Josh Kas