Hi Tim, Hm, that's all weird. I still cannot reproduce this. Reading Kathy's original file, I see 275 data points in Athena. Reading the Larch-generated project file in Athena, I also see 275 points... That's running both Athena+Ifeffit on Windows or running Athena+Larch on MacOS.
One thing that might be worth looking into is whether the data being in keV rather than eV might make a difference. That's sort of grasping at straws, but I'm not sure what else to try. On Tue, Mar 27, 2018 at 10:22 AM, Prüßmann, Tim (IKFT) < tim.pruessm...@kit.edu> wrote: > Hi Matt, > > > > the rebin screen was just to show the number of data points. > > > > We used column 1 as energy and column 9 as numerator; data type ‘xanes’; > no preprocessing. > > Overall we used identical parameters in 0.9.25 and 0.9.26 > > > > The “plan” is to do the standard calibration and normalization steps, but > we lose data points by just importing the data. In the example Kathy sent, > we go from 275 “real” points to 109 imported points. > > > > This effect appears with all Spec files we have tested (measured at > different times and to different beamlines -> different number of columns). > > > > Importing data from FEFF and FDMNES works, we get the same number of > points as in the ascii file. > > > > I also tried the XAS Viewer in Larch (0.9.37), which read all points of > the Spec file. I exported the data as Athena project and .csv > > Importing the project file into Athena works and the “about current group” > function shows 275 points. However, nothing can be plotted, the plot window > stays on the overview from the import screen. > > The csv file contains all 275 points, but importing to Athena again > reduces it to 109 points. > > > > > > Tim > > > > > > > > *From:* Ifeffit [mailto:ifeffit-boun...@millenia.cars.aps.anl.gov] *On > Behalf Of *Matt Newville > *Sent:* Tuesday, March 27, 2018 2:12 AM > *To:* XAFS Analysis using Ifeffit > *Subject:* Re: [Ifeffit] Athena (Demeter 0.9.26) does not import all > datapoints from ascci file > > > > Tim, Kathy, > > > > I did not respond to Kathy's earlier email, and I apologize for letting it > falling off my radar screen. > > > > FWIW, I do not see the same problem. I can read the file (with the Spec > plugin enabled) and plot the data. There are 275 data points. Reading > multi-column files from can be tricky (should we know which columns you > chose or what processing steps you took). And spec files can cause no end > of trouble. But from the screenshots aattached, it looks like maybe Time > meant to rebin the data. Is that related to what Kathy was trying to do? > > > > Perhaps you could explain what steps you took in reading the data file and > more clearly explain the problem? Like, did you intend to re-bin the data? > > > > For sure, the plot labeled as coming from PyMCA looks strange to me --- > the derivative of the data has clearly been smoothed from the raw data in > the file. I don't know what to make of that. > > > > Hope that helps, > > > > --Matt > > > > _______________________________________________ > Ifeffit mailing list > Ifeffit@millenia.cars.aps.anl.gov > http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit > Unsubscribe: http://millenia.cars.aps.anl.gov/mailman/options/ifeffit > > --Matt
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