[Ifeffit] New user to EXAFS

Carlo U. Segre segre at iit.edu
Thu Oct 7 10:23:50 CDT 2004


Yes, just look in the "Align" and "Merge" menus at top of the window.

Carlo

On Thu, 7 Oct 2004, William Bisson wrote:

> Hi Matt,
>
> Thanks for that, I shall give that a go. Can Ifeffit/athena combine two data 
> sets and average them?
>
> Regards
> William
>
> On Thu, 7 Oct 2004, Matt Newville wrote:
>
>> William,
>> 
>> First, if you remove the last line of the file:
>> 
>> END OF DATA
>> 
>> The data in this file will be read just fine by Ifeffit/athena.
>> 
>> Second, if you add any of the following characters: '#', '%', ';'
>> to the first non-blank character on the 'header' lines:
>> #&SRS
>> #SRSRUN=55267,SRSDAT=040521,SRSTIM=125128,
>> #SRSSTN='ex1a',SRSPRJ='xrsws7p1',SRSEXP='exafs   ',
>> #SRSTLE='KFe3                                                       '
>> #SRSCN1='80K     ',SRSCN2='two     ',SRSCN3='three   ',
>> #&END,
>> 
>> the header lines will be kept as strings -- not a big deal, but
>> convenient.
>> 
>> Those steps seem easy enough that a simple filter script (in perl,
>> bash, or python or whatever)  could be written to convert
>> Daresbury files to a format easily read into Ifeffit, athena, or
>> sixpack. In principle, ifeffit source code could be changed to
>> support this format, but it seems close enough that a simple
>> filter would be better.
>> 
>> Finally, I couldn't tell exactly what the columns in the file
>> were. It looked like the first column might have been
>> monochromator angle or steps, not energy.  If
>> that's the case, you might  want to look at
>> 
>>   http://cars9.uchicago.edu/cgi-bin/ifeffit/faqwiz?req=show&file=faq03.004.htp
>> 
>> for hints about how to convert steps to energy.
>> 
>> Hope that helps,
>> 
>> --Matt
>> 
>> _______________________________________________
>> 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
>

-- 
Carlo U. Segre -- Professor of Physics
Associate Dean for Special Projects, Graduate College
Illinois Institute of Technology
Voice: 312.567.3498            Fax: 312.567.3494
Carlo.Segre at iit.edu    http://www.iit.edu/~segre



More information about the Ifeffit mailing list