Hi George, I've confirmed the behavior you describe on a Mac running OS 10.5.8, Artemis 0.8.014, Ifeffit 1.2.12, and Athena 0.8.061. It does seem to be a bug or a corrupted file, but I can't figure out what it's actually doing. It's not grabbing the wrong data from the Athena project--none of the other data sets look that close. It sort of seems like it imports a version with a different background subtraction (maybe a different background k-weight, for instance) when you import from the larger project. --Scott Calvin Sarah Lawrence College On May 12, 2011, at 11:18 AM, George Sterbinsky wrote:

Also, for anyone who just wants to see the difference in the two data sets I've attached a figure.

George

On Thu, May 12, 2011 at 1:23 PM, George Sterbinsky mailto:GeorgeSterbinsky@u.northwestern.edu> wrote: Hello,

I've noticed an odd behavior in Athena and Artemis and I was hoping someone could explain it to me.

I've attached an Artemis file Data3.apj and an Athena file Data4.prj.

First open Data3.apj. Then from the Artemis file menu choose open, then open Data4.prj and import the Data4.xmu file. Now plot the data in k-space you will see a slight difference between the two spectra, most noticeably above 15 k, so plotting in k^3 is best to see the difference.

Now close Artemis and don't save. Open Data4.prj with athena and choose to import only the file Data4.xmu. Save the project as something else. I saved as Data4C.prj, which I have also attached.

Close Athena and don't save. Open Data3.apj again. Then from the Artemis file menu choose open, then open Data4C.prj or whatever you may have named the file and import the Data4.xmu file, which should now be the only data file in the project. Now plot the data in k- space and you will find that the two data sets are now the same. The differences at high k are no longer present. Can anyone explain what is going on here?

Thank you, George