October 2003 - Ifeffit - millenia.cars.aps.anl.gov

odd Athena behavior on file import
by Bruce Ravel 14 Oct '03

14 Oct '03

Hi folks, An odd situation was pointed out to me this weekend that I wanted to mention here on the list. I see the problem I'll describe below on both Windows and linux and I presume it is a problem on all platforms. The "Open many files" dialog in Athena is very handy for importing large numbers of data files. However, there is a strange interaction between this dialog and folders with apostrophes in the folder name. As an example, suppose I put my data file in a folder called "Bruce's Folder". If I try to read that data file using the many-files dialog, I get a strange pop-up error message stating that the data file is a directory and refusing to import the file. Some additional and inscrutable error messages are written to standard output. Interestingly, the single data file dialog has no such problem. Thus, if you put your data in a directory that has an apostrophe (such as "Bruce's Folder") you will not be able to use the many-file import dialog. The two options are to avoid apostrophes in directory names or to read in the data one-by-one. This seems to be a bug in something from the standard perl/Tk library and not in my own code. I'll contact the appropriate person, but I cannot guarantee a fix any time soon. B -- Bruce Ravel ----------------------------------- ravel(a)phys.washington.edu Code 6134, Building 3, Room 222 Naval Research Laboratory phone: (1) 202 767 5947 Washington DC 20375, USA fax: (1) 202 767 1697 NRL Synchrotron Radiation Consortium (NRL-SRC) Beamlines X11a, X11b, X23b National Synchrotron Light Source Brookhaven National Laboratory, Upton, NY 11973 My homepage: http://feff.phys.washington.edu/~ravel EXAFS software: http://feff.phys.washington.edu/~ravel/software/exafs/

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problems with deglitching in Athena
by Carlo U. Segre 09 Oct '03

09 Oct '03

Hi Bruce: I have been using the single point deglitching in Athena and I find some strange behavior. It seems that the only thing that counts is the horizontal cross hair. This needs to be right at the vertical position of the point to be selected. The vertical cross hair does not seem to matter. This is sort of counterintuitive and it took me a while to figure out that the program was not just selecting random points on me. Perhaps, if this is a feature of PGPLOT, it should be docmented. I am using the latest version of IFEFFIT and horae on Linux. Carlo -- Carlo U. Segre -- Professor of Physics Associate Dean for Special Projects, Graduate College Illinois Institute of Technology Voice: 312.567.3498 Fax: 312.567.3494 segre(a)agni.phys.iit.edu http://www.iit.edu/~segre

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30 element detector data in athena
by Vivek S. Murthi 08 Oct '03

08 Oct '03

Hi Matt, Bruce.. Athena could not open files from NSLS beamline X10C vax machine which has data in the form of .XFS. So, I converted it to *.dat and made it look like a dat file from NSLS beamline X 11a. Athena doesnot give me any prompt for incompatability but it simply crashes and closes. The data I have is from a 13 element detector, so there are about 38 columns of data. I am not sure if this would make Athena crash. If So, do you have any suggestions to overcome this. thnks vivek Vivek S. Murthi Graduate Research Assistant 419 Egan Center Northeastern University Boston, MA-02115 Phone: 617-373-8949 >

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Slight Problem with the new ARTEMIS
by Norbert Weiher 07 Oct '03

07 Oct '03

Dear Friends, I found a slight problem with the new ARTEMIS - I use the latest package for ifeffit (1.2.3) and HORAE (0.24). When you do a fit and look at the fit results for the current fit it seems that the program does not update all fit statistics the first time you do a fit. For example, when I switch from a single-shell fit to a dual-shell mode (from 4 to 8 variables), I get still 4 variables in the first run. When I re-calculate, it updates everything correctly. It's just for the number of variables - the rest seems to be updated in the first run. By the way: The chi-square maps are doing well. I am at the state of applying them to my systems. The GUI is horrible still, but the algorithm works. Thanks again to Matt for coding the library which does this work for me :) Cheers, Norbert -- Dr. rer. nat. Norbert Weiher (norbertweiher(a)yahoo.de) Institute for Chemical and Bioengineering - ETH Hönggerberg HCI E 117 - 8093 Zürich - Phone: +41 1 63 3 48 32

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