Hi Scott, No my fault, I suffer from tl;dr itis. I didn't read beyond linear combination.
That said it still works: Fitting Data as chi(k) from 3.000 to 12.000 fit done use k-weight = 2 Fit included 181 data points and 1 variable R-factor = 0.209356 chi-square = 30.92638 reduced chi-square = 0.1718132 group weight ======================================= 2: Standard 1 0.436(0.016) 3: Standard 2 0.564(0.016) Jeff On Jan 7, 2011, at 10:24 PM, Scott Calvin wrote: > Jeff--sorry, I guess my grammar got a little convoluted. It DOES work with > norm(E) and deriv(E) fitting for me as well. It does NOT work with chi(k) > fitting for me. > > --Scott Calvin > Faculty at Sarah Lawrence College > Currently on sabbatical at Stanford Synchrotron Radiation Laboratory > > On Jan 7, 2011, at 7:58 PM, Jeff Terry wrote: > >> Did not try really hard to work with it. >> >> Fitting Data as norm(E) from -20.000 to 30.000 >> >> Fit included 98 data points and 3 variables >> R-factor = 0.000263 >> chi-square = 0.04347 >> reduced chi-square = 0.0004482 >> >> group weight >> ======================================= >> 2: Standard 1 1.000(0.000) >> 3: Standard 2 0.455(0.000) >> >> >> group e0 shift >> ======================================= >> 2: Standard 1 -0.905( 0.000) >> 3: Standard 2 -0.905( 0.000) >> >> >> >> <PastedGraphic-1.pdf> >> >> On Jan 7, 2011, at 8:07 PM, Scott Calvin wrote: >> >>> Hi all, >>> >>> Athena has been crashing for me during one particular linear combination >>> analysis, and I'm wondering if any of you have an explanation. A project >>> file which demonstrates the problem is attached. I am using Athena 0.8.054 >>> with ifeffit 1.2.10 on a MacBook Pro using OS 10.5.8. >>> >>> The behavior can be seen by trying to fit the Data group by using a linear >>> combination of Standard 1 and Standard 2 in chi(k). It gets as far as >>> "plotting in k-space from group 'Data'...done!' and then hangs, with the >>> watch icon remaining indefinitely. This doesn't happen in norm(E) or >>> deriv(E) fits, and doesn't happen when Standard 1 is not used. But Standard >>> 1 appears to have uncorrupted chi(k) data when plotted directly. Standard 1 >>> is from one of the XDAC lines at NSLS, as are the standards that work. >>> >>> I've tried saving Standard 1 and reading it in as a new group, but no luck. >>> I've also looked at the data in Standard 1, and I don't see anything out of >>> place, such as a place where the energy backs up. I've tried starting the >>> chi(k) file with zero values, truncating the end values, and changing the >>> background spline to end at the same point the data does. And it always >>> hangs at the same point. >>> >>> Any ideas? I'd like to use this data for a workshop next week! >>> >>> --Scott Calvin >>> Faculty at Sarah Lawrence College >>> Currently on sabbatical at Stanford Synchrotron Radiation Laboratory >>> >>> <LCACrash.prj> >>> _______________________________________________ >>> Ifeffit mailing list >>> Ifeffit@millenia.cars.aps.anl.gov >>> http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit >> > > _______________________________________________ > Ifeffit mailing list > Ifeffit@millenia.cars.aps.anl.gov > http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit _______________________________________________ Ifeffit mailing list Ifeffit@millenia.cars.aps.anl.gov http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit
