Okay. Sure, I agree with Matt. But I don't think that this data can be broken into different shells....otherwise I do not believe that the model would fail when the entire data range is optimized together.
There could be two reasons that the model fails. Either there are correlations that were artificially broken by fitting the r-ranges separately or there is some data that is not accounted for in the model. I guess I should only talk for myself. "I do not generally accept your fitting method to be the best". I did say BEST...sometimes best is not an option. Shelly > -----Original Message----- > From: ifeffit-boun...@millenia.cars.aps.anl.gov [mailto:ifeffit- > boun...@millenia.cars.aps.anl.gov] On Behalf Of Matt Newville > Sent: Friday, April 17, 2009 9:23 AM > To: XAFS Analysis using Ifeffit > Subject: Re: [Ifeffit] Fitting procedure > > Shelly wrote: > > > ....and what we are trying to say is that your method is not generally > > accepted as the best way to model data. > > We are? > > If I understand Abhijeet's approach (first fit the first shell, then > fix those parameters, change the R-range to the second shell and fit > that), it is exactly what I would recommend. > > --Matt > > _______________________________________________ > Ifeffit mailing list > Ifeffit@millenia.cars.aps.anl.gov > http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit _______________________________________________ Ifeffit mailing list Ifeffit@millenia.cars.aps.anl.gov http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit
