[Ifeffit] Deglitching in Athena 0.9.14

[Bruce Ravel]

On Sunday, January 06, 2013 11:08:41 AM Lyle Gordon wrote:
> I just installed the latest version of Demeter, 0.9.14, on my Windows
> 7 computer. I tried to deglitch a dataset in x(E). Upon clicking
> "choose a point" the window pops up telling me to double click in the
> gnuplot window. I can select a point but there doesn't appear to be
> any feedback in the UI about which point was selected until after
> clicking ok. Then after ok I get a large "E". It is difficult to tell
> sometimes exactly which point was selected as the E is quite large.
>
> I guess this is turning into more a "bug" report/feature request, but
> I felt the previous interface in Athena 0.8.054 gave much more
> feedback during the deglitching process of removing points.

The fact that plucking is awkward in the new software has come up on
this list before and I always ackanolwedge that it is the one step
backwards in the new stuff.

The task of double clicking in gnuplot and transfering the result to
Athena is actually a bit tricky because that communication happens via
the clipboard.  This is the only advantage I can think of to using
Ifeffit and PGPLOT rather than gnuplot.  With PGPLOT, the
communication of plucking a point from a plot happens directly between
PGPLOT and Athena.

Negotiating the communication via the clipboard has various pitfalls.
The solution I originally came up with worked great on linux and hung
the computer on Windows.  Sigh....  As a compromise, I came up with
the current scheme.  It sucks, but at least it behaves consistently
(albeit consistently awkwardly) on both platforms.

I am going to spend some time this week looking into this again.  Last
night I came up with a new idea that I want to try out.  I'll post an
update if I make any progress.



Regarding the big "E" (which is supposed to be a circle with a cross
in it -- #305 from the S column at
http://cars9.uchicago.edu/ifeffit/Demeter/GnuplotSymbols):  I have
seen this problem several times before, but it was always at a
training course when I did not have the time to look into it.  I
suspect it has something to do with which fonts are installed on your
computer or where they live on your computer.  However, this does not
happen on any of my Windows computers, which is why the problem
remains unsolved.

I am willing to look into this problem, but I will need your help to
try out a few things.  Lyle, if you are willing to volunteer a bit of
time to help me troubleshoot this problem, please contact me off the
mailing list and we'll proceed from there.

Regards,
B


-- 

 Bruce Ravel  ------------------------------------ bravel at bnl.gov

 National Institute of Standards and Technology
 Synchrotron Methods Group at NSLS --- Beamlines U7A, X24A, X23A2
 Building 535A
 Upton NY, 11973

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