On Monday 08 September 2008 14:03:05 Carlo Segre wrote: > It sounds to me like the question is a bit more complex than that. I > believe that with their continuous scan electronics, they get absorption > as a function of time, not energy. If I am not mistaken, he is asking to > have a conversion to energy built in somehow.
>From this, I finally understand the question. Athena does not currently provide a mechanism for expanding the energy axis. I could be convinced to code that up, but I would need a clearer statement of what you actually want done and several clear examples of how to process the data correctly. B On Monday 08 September 2008 13:59:42 Anatoly Frenkel wrote: > Khalid, what you can do is to note how much the higher energy (at energy > E1) feature is shifted from what you think it should be (let's say by the > amount of D eV), provided that you fixed the lower energy point to what you > wanted (say, E0). Then, you should transfer the data into a spreadsheet and > apply linear scaling: > > > > E --> E0 + (E-E0)*D > > > > It will ensure that in the range between E0 and E1 the data are linearly > stretched or compressed, depending on the sign of D. > > > > Anatoly > > > > = > > _____ > > From: Khalid, Syed [mailto:[EMAIL PROTECTED] > Sent: Monday, September 08, 2008 12:21 PM > To: ifeffit@millenia.cars.aps.anl.gov > Subject: [Ifeffit] enrgy-axis-expansion > > > > Is it possible in Athena to change the y-axis (energy > scale) at two different energy points of an EXAFS scan? > > I have a Ni foil spectrum as a function of time. > The edge can be set at 8333.0 eV, and I want to > to assign higher energy to a known feature in the Ni scan. > > > Syed Khalid > 725D, National Synchrotron Light Source > Brookhaven National Laboratory > Upton, NY 11973 > > Ph: 631-344-7496 > FAX: 631-344-3238 > e-mail: [EMAIL PROTECTED] > > _______________________________________________ > Ifeffit mailing list > Ifeffit@millenia.cars.aps.anl.gov > http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit -- Bruce Ravel ------------------------------------ [EMAIL PROTECTED] 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/ _______________________________________________ Ifeffit mailing list Ifeffit@millenia.cars.aps.anl.gov http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit