[Ifeffit] Re: sigma squared
Bruce Ravel
bravel at anl.gov
Thu Mar 31 17:34:04 CST 2005
On Thursday 31 March 2005 17:03, Scott Calvin wrote:
Karla> Yes, and when I regenerate the plot, a window pops up to show
Karla> what range I picked, right? This window does not intersect at
Karla> 0 on the Xs I picked. I believe the correct x values are
Karla> written.
Scott> I have seen an intermittent bug in which the window displayed
Scott> is not correct (my students sometimes see it too). Fortunately,
Scott> the window actually used by the fit is in agreement with the
Scott> numbers in the boxes. I haven't reported this bug yet because I
Scott> haven't figured out how to make it reproducible. I use Windows
Scott> XP with Artemis 0.7.012.
Scott> This isn't exactly the same problem Karla is having, since mine
Scott> is quite intermittent and may be related to multiple
Scott> datasets. I'll try to keep a better eye out for when it arises.
One or more of us is not expression him/herself clearly -- I say this
because I am now quite confused.
To use the example of kmin, the functional forms of most of the window
functions are such that they go to zero at kmin-dk/2. It's always
been this way. The exception is the sine window, but it doesn't go to
zero at kmin, either.
I suppose that I might be missing the point entirely, so I'll leave it
with this: without a convincing screen shot demonstrating the
problem, I am going to assume that there isn't one.
B
--
Bruce Ravel ----------------------------------- bravel at anl.gov -or-
ravel at phys.washington.edu
Environmental Research Division, Building 203, Room E-165
Argonne National Laboratory phone and voice mail: (1) 630 252 5033
Argonne IL 60439, USA fax: (1) 630 252 9793
My homepage: http://feff.phys.washington.edu/~ravel
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