[Ifeffit] Xanes peaks fitting with Athena: no data on output

Ismael Graff graff at fisica.ufpr.br
Wed Jun 10 09:21:58 CDT 2009

Dear Bruce,

thank you very much for your prompt answer. An user of Athena that
participates in the mailing list gave me a way to get the data of the
fitted curves. Shortly, I use the log file to get the functions parameters
and, with the definition of the functions, I go to Origin and generate the
curves. So, I can plot the fitted curves with the experimental data.

Kind regards, Ismael.

> Ismael,
> OK!  With a bit of further explanation from Adam, I was able to
> understand the issue.  You are certainly correct -- the button labeled
> "Save fit as a data group" certainly does not do what it says!
> There is no work around in the current version of Athena -- that
> button is simply broken.  I am planning to make a new release of my
> software some time in the next three weeks or so -- before the APS
> XAFS Summer School next month.  This problem, along with a few others
> that have come to my attention recently, will be fixed in the next
> release.
> Thank you for the bug report.  As always -- the software benefits
> enormously from the feedback I receive in this forum.
> Regards,
> B
> On Tuesday 09 June 2009 09:55:08 pm Ismael Graff wrote:
>> Hi dears,
>> I was using Athena (Ifeffit version 1.2.11) to fit XANES peaks and it
>> worked very well. But, at the end when I try to "save fit as data group"
>> the output is empty (or almost). The only thing that I get when I save
>> the
>> group data as "norm(E)" is the following:
>> # Athena multicolumn data file -- Athena version 0.8.056
>> # This file contains normalized mu(E) from:
>> # Peak hnvp (column 2)
>> #------------------------
>> #  energy Peak_hnvp
>> I have no data in the output! Also, when I click the "save fit as data
>> group" button, the plot window becomes blank/white, without plots! I
>> have to have the fits to put them on a high-quality figure for
>> publication.
>> Interestingly, the fits appear in the plot window but I can not get the
>> data corresponding to the fits. I can just save the window as GIF or PS
>> files, and it works well. I use Athena on windows XP and Vista and the
>> problem is the same for both. I´ve attached my data file in case
>> someone
>> would like to have a look on it.
>> For sure I´m doing something stupid and I don´t see where is the fail!
>> All the best, Ismael.
> --
>  Bruce Ravel  ------------------------------------ bravel at bnl.gov
>  National Institute of Standards and Technology
>  Synchrotron Methods Group at NSLS --- Beamlines U7A, X24A, X23A2
>  Building 535A
>  Upton NY, 11973
>  My homepage:    http://xafs.org/BruceRavel
>  EXAFS software: http://cars9.uchicago.edu/~ravel/software/exafs/
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Ismael Leandro Graff

Departamento de Física - UFPR
Centro Politécnico, CP 19044
81531-990, Curitiba, Brazil.
Tel: +55 41 3361 3427
Fax: +55 41 3361 3418

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