[Ifeffit] Fitting Problems in Artemis version 0.9.26

2018-06-28 Thread LIU HUAN
Dear Dr. Ravel, I want to ask you that when I use the new version "Artemis 0.9.26" I have two problems. (1) The fitting Range was reported to be a error that the Rmin should be larger than the Rkbg value. It makes that the fitting range cannot be smaller than 0.9 (the Rkbg value is 0.9). (2)

[Ifeffit] data after rebinning look worse in k-space than before?

2018-06-28 Thread Karl-Michael Schindler
Hi When it comes to rebinning and/or averaging, my preferred way is to use smoothing spline interpolation as implemented by IgorPro from Wavemetrics. With a little care, smooth curves with no artifacts can be obtained, in particular with oversampled data. We use it a lot with XPS data, where

Re: [Ifeffit] Ifeffit Digest, Vol 184, Issue 21

2018-06-28 Thread Carlo Segre
Hi Edmund and Chris: I totally agree but for the same reason as Edmund, it is much more efficient to let the monochromator and not stop and start all the time. Rebinning is useful if you are sure that it works properly. Carlo On Thu, 28 Jun 2018, Edmund Welter wrote: Dear Chris,

Re: [Ifeffit] Ifeffit Digest, Vol 184, Issue 21

2018-06-28 Thread Edmund Welter
Dear Chris, Rebinning is always fraught; I would normally not allow a student to do it... I thought you would say that! ;-) and I share your concern, actually that is the reason why we store ~8600 data points or more for a scan of 1200 eV. Don't mess with the raw data! But 8600 (or