On Sunday 04 January 2009 05:00:56 am you wrote:
Dear Bruce,
Since the 2 or 3 latest athena versions, I have noticed a somewhat strange behavior of the 'plot multiplier' command in athena. I'm using the latest horae and iffefit releases on linux (Madriva 2007) and windows (XP, SP3).
The plot multiplier works for chi and fourier-transformed spectra, but fails for xanes and xmu spectra: changing the plot multiplier to a value different from 1 makes no effect of the last two types of spectra. In contrast, 'y-axis offset' command works for all types of spectra.
Personally, I found the possibility to multiply xanes spectra extremely convenient (as far as I remember, it worked in older than 2006 versions of athena....), for example for quick comparison and superposition short-energy range XANES spectra for which the athena energy normalisation procedures do not work perfectly in some cases.
Gleb, At some point I decided that the plot multiplier should only apply to oscillatory-like functions and not to step-like functions. That is, you can scale up the derivative of mu(E), but not mu(E) or norm(E). To the best of my memory, it has been like that for many years. Thinking about it today, that decision does not really make a lot of sense. I cannot see a reason why Athena should not behave the way you suggest, so it will do so in the next release. Regards, B -- Bruce Ravel ------------------------------------ bravel@bnl.gov National Institute of Standards and Technology Synchrotron Methods Group at NSLS --- Beamlines U7A, X24A, X23A2 Building 535A Upton NY, 11973 My homepage: http://xafs.org/BruceRavel EXAFS software: http://cars9.uchicago.edu/~ravel/software/exafs/