[Ifeffit] Re: How to change the spline knots in Athena

Matt Newville newville at cars.uchicago.edu
Tue Feb 21 12:52:54 CST 2006


Dear Yoshihiro,

On 2/21/06, Bruce Ravel <bruce at mr.aps.anl.gov> wrote:
>
> On Tuesday 21 February 2006 03:08, you wrote:
> > I am using Athena (0.8.048) software for XAFS analysis.
> > It is greatly helpful to me for XAFS characterization.
> >
> > I have a question on the background estimation.
> > Spline knots is displayed by "About current group" menu.
> > Could you tell me how to change the spline knots, if possible.
> > Changing the knots is useful to suppress the long-range variation.

What long-range variation are you looking to suppress?  Would changing
Rbkg be enough?  If not, please let us know what you're trying/hoping
to do.

--Matt




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