[Ifeffit] What you see is "not" what you get: help

[Ravel, Bruce]

Ismael,

Well.... I did something very silly.  As Leandro surmised, Athena writes mu(E) rather normalized mu(E) to the peak fitting log file.  I am rather perplexed as to how I did not notice that before....  I guess you get what you pay for, eh? ;-)

Anyway, the problem is fixed in svn.  I will rebuild the athena executable next week and make an update.  In the meantime Leandro suggested a fairly simple work-around, which I too would recommend.

B

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

 National Institute of Standards and Technology
 Synchrotron Methods Group at Brookhaven National Laboratory
 Building 535A
 Upton NY, 11973

 My homepage:    http://cars9.uchicago.edu/~ravel
 EXAFS software: http://cars9.uchicago.edu/~ravel/software/exafs/




-----Original Message-----
From: ifeffit-bounces at millenia.cars.aps.anl.gov on behalf of Ismael Graff
Sent: Thu 7/9/2009 2:52 PM
To: ifeffit at millenia.cars.aps.anl.gov
Subject: [Ifeffit] What you see is "not" what you get: help
 
Hi folks,

I´ve been working on Xanes peaks fitting with Athena (last version) and I
found a strange behaviour. I get a "good" fit looking to the Graphics
Window of Athena and to the minimized parameters (R-factor, etc). However,
when I use the data of the fit generated by Athena "write a log file"
feature and plot them in Origin, the fit looks bad! In order to get a
"good looking" fit in Origin I have to change the parameters ad-hoc in
Athena fitting dialog box. When I do this, the fit looks bad in Athena
Graphics window and better in Origin.
The values that are inserted ad-hoc in Athena are not the optimized ones
from the fitting procedure output. I have attached the log file from
Athena fit and two figures: a PS figure from Athena and a JPG figure from
Origin.
It resembles that the generated data from Athena are not exactly these
ones that I see in the Graphics window!

I´m looking for help from someone out there.

Kind regards, Ismael.


-- 
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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