Hi folks! Today I am pleased to announce the first version of Artemis that supports multiple data set fitting. That is, you can import 1 or more data sets along with all the relevant feff calculations and use parameters which impose constraints between the data sets. The second huge new feature in Artemis is something I call the Artemis Project Assistant. This is a wizard-like feature of the program which helps you walk through the steps necessary to import one or more data sets and one or more feff calculations and to set up fitting parameters. This will, I hope, reduce the difficulty and complexity of getting started with Artemis. I threw together a web page explaining the Project Assistant: http://feff.phys.washington.edu/~ravel/software/exafs/apa.html There are lots of pictures on that page as well as a step-by-step recipe using the copper example that comes with the distribution. The third big change has to do with how k-weighting is done for fitting and plotting. It is now possible to do a multiple k-weight fit, that is to simultaneously fit data using, for example, both k=1 and k=3 weighting. This is often helpful for distinguishing between correlated variables which have different k dependence, such as sigma^2 and S_0^2. To explain how to use the various k-weighting options in fits and in plots, see this web page: http://feff.phys.washington.edu/~ravel/software/exafs/kweight.html I am looking forward to getting some feedback on this new version of Artemis, both in terms of bug reports and in terms of suggestion for user interface improvements. The problem of organizing and presenting a fit with multiple data sets and multiple feff calculations is very difficult. I have tried to present it in a way that is tractable, but I am open to any suggestions any of you might have to make is better and more clear. As for Athena, 0.8.016 represents only a few small changes. The most important is that I fixed a very serious bug in the deglitching interface. As always, new tarballs and Windows executables are available on my web site. Please note that unix, linux, and OSX users must be running at least version 1.0076 of Ifeffit. If you have not updated the Ifeffit core recently, please do so before installing the latest tarball. Thanks this time to Adam Webb for pointing out the deglitching bug in Athena. And a huge pile of thanks to Shelly Kelly for testing Artemis last week and for making many great suggestions for improving the Project Assistant and multiple data set fitting in general. Regards, Bruce -- Bruce Ravel ----------------------------------- ravel@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, X24c, U4b 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/