[Ifeffit] Athena deglitch problem

Dear Matt After installing Demeter to other than C drive there is no problem with deglitching. For me its easier to rebin the data points and then deglitch the terrible glitch in my data. If I don't rebin I need hours to deglitch a single spectra since the data contains a big glitch. I believe the major problem is solved for now, thanks a lot for your help. Regards Sathish On Tue, Dec 17, 2013 at 7:00 PM, wrote:

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Today's Topics:

1. Re: Athena deglitch problem (Sathish Mayanna) 2. Re: Athena deglitch problem (Matt Newville)

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Message: 1 Date: Mon, 16 Dec 2013 19:42:25 +0100 From: Sathish Mayanna To: ifeffit@millenia.cars.aps.anl.gov Subject: Re: [Ifeffit] Athena deglitch problem Message-ID: Content-Type: text/plain; charset="iso-8859-1"

*Dear Matt*

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...

Now it seems working well except some minor things, I can remove the points from the data, the random point selection by software works better for rebinned data. I think the only problem I have now is I still cannot

move

...

...

the cursor after double click (I can only remove the points which the software decides - at least now it choose the points where I double click). When i move my mouse cursor on the plot, it shows the correct coordinates.

I'm still a bit confused about whether this actually working for you. The data you sent has fairly large arrays (>2400 points), but all the data was well-ordered in energy... I think that should "just work", without needing re-binning. And it does for me, and I don't see how re-binning would affect this.

* If I don't rebin the data, Athena will not choose the point which I am intend to remove (I think i have some minor issues here). If I rebin the data from ~ 2400 to 350 points, Athena will work correctly.*

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I think it's always been the case that you double-click near the point to be removed, and hope that Athena does select the one you intended.

*This works perfect for rebinned data. *

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I have one clarifications, when u choose the option to deglitch the

data

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(rebinned or non rebinned data), does the x(E) data plot looks like in the attached file (line) or it looks like sets of blue round points same size as cursor.

For me, it looks very much like the image you attached. I do not see a series of dots.

...

I think, the issue is solved except that I cannot move the randomly chosen point.

Why can't you remove the point chosen? That seems like it's not working to me. Wasn't that the problem you were having?

*I mentioned "MOVE" in my above sentence, (Just to be more specific, when I double click on the plot to choose a point, sometimes Athena select its own random points away from the point where I clicked, when I try to drag that randomly chosen cursor to the point of my interest, it will not work), IS THIS NORMAL? *

*I will try to figure out all the possible ways for non-rebinned data, if it does not work at least for now rebinned data works.*

*Regards* *Sathish*

...

Again, it may be that I'm not understanding. Cheers,

--Matt

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Message: 2 Date: Mon, 16 Dec 2013 08:30:39 -0500 From: Bruce Ravel To: XAFS Analysis using Ifeffit Subject: Re: [Ifeffit] Handling time resolved data Message-ID: <52AF007F.4050600@bnl.gov> Content-Type: text/plain; charset=ISO-8859-1; format=flowed

On 12/13/2013 09:00 AM, Ditty Dixon wrote:

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Dear Bruce,

Recenetly we did some time resolved measurements, QEXAFS mode. While the old Athena arranged the file as we want i.e file 1, 2, 3 etc, the new did it bit different 1, 11 12 and again 2, 21 etc. Screenshot attached. Why is it doing diffrently for the two version? Can it be fixed some how.

You haven't explained exactly where these data come from, so I am assuming that each scan was written to its own file and these files were imported into Athena.

In Athena, data are imported in "ascii-betical" order, that is, sorted in order of characters in the ASCII chart:

http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters

In that sense, Athena sorted your data as expected. As Chris pointed out, if you want things like

nr_1.spec nr_2.spec ... nr_10.spec

to sort numerically by the number between the _ and the .spec, you need to format the them so that numerical and ascii-ordered sorting come out the same. This is done as

nr_01.spec nr_02.spec ... nr_10.spec

For a quick exafs experiment, two digits is probably not enough, so you'd want something like

nr_00001.spec nr_00002.spec ... nr_00010.spec

I don't recall quite how the sorting worked in the old version of Athena (it has been over 5 years since I stopped working on it), but my vague memory is that, on Windows, they were imported in the order that they were clicked upon the file selection dialog. The way it is currently done is much better in that it is reproducible.

-- Bruce Ravel ------------------------------------ bravel@bnl.gov

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

Homepage: http://xafs.org/BruceRavel Software: https://github.com/bruceravel

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