[Ifeffit] MBACK and Athena

Christopher Patridge patridge at buffalo.edu
Thu Mar 7 07:21:43 CST 2013

Hello Cyril,

Is there a particular reason for moving the data to Matlab and using 
MBACK rather than the built-in procedure in Athena?  From your email, it 
seems that you have the raw data which you then merge.  I would feel 
confident in performing all the data processing in Athena.  Your hope in 
merging data is remove noise and improve the confidence that features 
seen in the data are real.  Someone may be able to comment on the impact 
of MBACK, but questions here mostly deal with ifeffit.

Good luck,


Christopher J. Patridge, PhD
NRC Post Doctoral Research Associate
Naval Research Laboratory
Washington, DC 20375
Cell: 315-529-0501

On 3/7/2013 7:10 AM, Bajamundi Cyril wrote:
> Hello,
> I have 3 spectra taken from a single sample, I align, merge and save 
> the merged data as  merge.xmu file.
> I then normalize this merged data using the MBACK algorithm in Matlab, 
> the results of which is stored as merged.xmu.mnor file. This file, I 
> then import to ATHENA using the instructions in 
> http://www.mail-archive.com/ifeffit@millenia.cars.aps.anl.gov/msg03523.html.
> I do this for all my samples and standards in order for me to perform 
> LCF.
> My questions are
> 1.Is this procedure valid? In the sense that no information or 
> features of the spectrum are lost from merge.xmu to merged.xmu.mnor file.
> 2.How will the procedure <Calibrate data> affect this procedure?
> Thank you for your time in answering my questions.
> Regards,
> Cyril
> PS: This query is in relation to my previous question [Ifeffit] Basic 
> question in normalization and background removal
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