[Ifeffit] fitting a specific k range

Jensen, Mark P. mjensen at anl.gov
Thu Dec 5 12:31:00 CST 2013


Besides, that's a (very common) misuse of the word hosanna.



-----Original Message-----
From: ifeffit-bounces at millenia.cars.aps.anl.gov [mailto:ifeffit-bounces at millenia.cars.aps.anl.gov] On Behalf Of Anatoly I Frenkel
Sent: Thursday, December 05, 2013 12:29 PM
To: XAFS Analysis using Ifeffit
Subject: Re: [Ifeffit] fitting a specific k range

I object the use of "hosannas of adoration". Other than the use of Greek mythology, I propose the mailing list to be religion-neutral and tautology-free.
How about "you should consider praise or adoration", instead of "you should consider hosannas of gratitude".
Anatoly 

________________________________________
From: ifeffit-bounces at millenia.cars.aps.anl.gov [ifeffit-bounces at millenia.cars.aps.anl.gov] on behalf of Bruce Ravel [bravel at bnl.gov]
Sent: Thursday, December 05, 2013 1:19 PM
To: XAFS Analysis using Ifeffit
Subject: Re: [Ifeffit] fitting a specific k range

On 12/05/2013 12:18 PM, Scott Calvin wrote:
> While I defend that principle as a very important one, I'm not 
> claiming it applies in Matt's case--it probably doesn't. To reproduce 
> features at high-R, it IS necessary to have a model (i.e. paths) that 
> cover the high-R contribution, and it sounds like Matt does not have 
> those paths included in his model. But it's not necessary to FIT up to 
> high R.

It doesn't apply.  Matt filtered his data.  Matt used paths that only include Fourier components within the filtered band.  To suggest that it may somehow be reasonable that the fit could turn out other than how it did runs a real risk of misleading this fellow who is, apparently, a newcomer to EXAFS analysis.

> P.S. My least favorite warning that Artemis provides is the one that 
> tells you that you're including paths outside the fitting region, for 
> just this reason. It's easy enough to change the preferences so that 
> Artemis doesn't give that warning, and it's usually one of the first 
> things I have my students do when they're first learning to fit.

OK.  Whatever.  Instead of complaining about this, perhaps you should consider hosannas of gratitude that I make it possible, easy even, to accommodate preferences different from my own.

B


--
  Bruce Ravel  ------------------------------------ bravel at bnl.gov

  National Institute of Standards and Technology
  Synchrotron Science Group at NSLS --- Beamlines U7A, X24A, X23A2
  Building 535A
  Upton NY, 11973

  Homepage:    http://xafs.org/BruceRavel
  Software:    https://github.com/bruceravel
_______________________________________________
Ifeffit mailing list
Ifeffit at millenia.cars.aps.anl.gov
http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit

_______________________________________________
Ifeffit mailing list
Ifeffit at millenia.cars.aps.anl.gov
http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit




More information about the Ifeffit mailing list