Hi, I've installed horae on a new laptop after a hiatus. When I try
to run athena or artemis I get the message
Can't locate Ifeffit.pm in @INC (@INC contains: ...
Setup:
ifeffit-1.2.11c
horae-069
Ubuntu 8.04.1
There is an Ifeffit.pm (in fact two) in the ifeffit-1.2.11c source
directory, so I
Dear Bruce, in fact this is the very first shortcoming I notice in
Artemis. It's a terrific piece of software.
And I'm writing to propose a workaround, which I hope would be quick
to implement (in any case easier than any heuristic that may
eventually solve the problem in Demeter).
Just as you
> Modify the feff.inp file, run feff, import paths,
> parametrize them.
Thanks Bruce. The problem here is "parametrize them". This is
too tedious a process to carry out every time two paths switch places.
So I've been discarding and rereading only the paths that change numbers;
still tedious
Dear List (and especially Bruce)
I recently restarted using Artemis after a hiatus. I seem to be
confused about a key procedure used to worked before (unless I'm deluded).
I load in an Athena project (a single curve to be fitted), and then a
feff file that contains an approximation to my atomic
Hi Shan, here's a somewhat different way to reach the same conclusion
as Scott.
>scan during data collection? As I see Nidp = (2/pi)*(deltak *
>deltaR), there is no reference to the scan step.
But there is, an implicit one. Your deltaR is limited by (among other
things) the scan step. If you
/den=1 /write=../ASCII/$i $i
done
# this prints 7 columns (the first being a repeat of energy)
# In Athena, select num=5,den=6 for sample, num=6,den=7 for reference
**
Hope this helps!
Silvio Levy
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Thanks to all who replied and for the references proved by
Bruce Ravel and Wayne Lukens. What a beautiful explanation.
Best wishes,
Silvio
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Dear Bruce,
OK, I hear you. I'll stop obsessing about the spike and only show
chi*k^2 plots in my thesis :-)
More seriously -- Your answer helps put things into perspective, and
the comparison between the FFT with k-range starting at 0 and 1 is
instructive.
It's worth noting, however, that
Dear Shelly, Dear Bruce
Thanks for both your answers. Going through Shelly's slides was a
nice refresher course. Bruce, ok, I see why normalization is not affected.
However The data were already correctly aligned. I've now
explicitly tied the data to the standard, using the Data menu, an
Bruce - thanks a lot for your post. I've encountered this bug a few
times, but I thought it might be a problem with my machine; in any
case I could never replicate the problem and file a bug report.
I have another question to the list - how do I get rid of a spike at low k?
See for instance ht
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