Re: [Ifeffit] fitting a specific k range

2013-12-05 Thread Bruce Ravel
Matt, At the risk of coming off sounding a bit mean, I don't think you are asking a very well-posed question. Examining the history of this project, I see that you are fitting in q space. Like Matt, this is not my favorite choice, but there is nothing horribly wrong about it, so long as you

Re: [Ifeffit] fitting a specific k range

2013-12-05 Thread Chris Patridge
Matt, Outside of the question of fitting the data, can you collect absorption data on the additional 3+ metal you are adding the material? Chris *** Dr. Christopher Patridge Assistant Professor Department of Math and Natural Sciences D'youville

Re: [Ifeffit] fitting a specific k range

2013-12-05 Thread Scott Calvin
First, a disclaimer--I haven't looked at the data Matt sent (it's a busy time of year!), but I disagree in a general sense with my reading of what Bruce wrote (perhaps I am reading it wrong). In particular, I disagree with this statement: Given that you are fitting in q-space, it is

Re: [Ifeffit] fitting a specific k range

2013-12-05 Thread Bruce Ravel
On 12/05/2013 12:18 PM, Scott Calvin wrote: While I defend that principle as a very important one, I'm not claiming it applies in Matt's case--it probably doesn't. To reproduce features at high-R, it IS necessary to have a model (i.e. paths) that cover the high-R contribution, and it sounds like

Re: [Ifeffit] fitting a specific k range

2013-12-05 Thread Chris Patridge
Bruce, Without those friendly warnings (reminders), beginners would likely fall down several rabbit holes before understanding many of the important steps necessary to get meaningful answers in EXAFS. I know I would have. Chris *** Dr. Christopher

Re: [Ifeffit] fitting a specific k range

2013-12-05 Thread Jensen, Mark P.
Besides, that's a (very common) misuse of the word hosanna. -Original Message- From: ifeffit-boun...@millenia.cars.aps.anl.gov [mailto:ifeffit-boun...@millenia.cars.aps.anl.gov] On Behalf Of Anatoly I Frenkel Sent: Thursday, December 05, 2013 12:29 PM To: XAFS Analysis using Ifeffit

Re: [Ifeffit] fitting a specific k range

2013-12-05 Thread Anatoly I Frenkel
I object the use of hosannas of adoration. Other than the use of Greek mythology, I propose the mailing list to be religion-neutral and tautology-free. How about you should consider praise or adoration, instead of you should consider hosannas of gratitude. Anatoly

Re: [Ifeffit] fitting a specific k range

2013-12-05 Thread Matt Newville
Scott, On Thu, Dec 5, 2013 at 11:18 AM, Scott Calvin scal...@sarahlawrence.edu wrote: First, a disclaimer--I haven't looked at the data Matt sent (it's a busy time of year!), but I disagree in a general sense with my reading of what Bruce wrote (perhaps I am reading it wrong). In particular,

Re: [Ifeffit] fitting a specific k range

2013-12-05 Thread fred.mosselmans
What I find reassuring about Bruce's warnings is they allow you to think properly about what you are doing. Fortunately, unlike Chris, I am not of a size where I have to worry about falling down rabbit holes, unless American rabbits are much bigger than English ones. I would commend Matt's

Re: [Ifeffit] fitting a specific k range

2013-12-05 Thread Matt Newville
Hi Anatoly, On Thu, Dec 5, 2013 at 12:28 PM, Anatoly I Frenkel afren...@yu.edu wrote: I object the use of hosannas of adoration. Other than the use of Greek mythology, I propose the mailing list to be religion-neutral and tautology-free. Is Down the rabbit hole OK? I'm not sure it usually

Re: [Ifeffit] fitting a specific k range

2013-12-05 Thread Matthew Marcus
It must be a slow day in the EXAFS world. Does the term 'topic drift' mean anything? :-) The Wikipedia entry http://en.wikipedia.org/wiki/Hosanna has some examples of secular use of the word, FWIW, which I admit isn't much. mam On 12/5/2013 2:02 PM, Matt Newville wrote: Hi Anatoly,

Re: [Ifeffit] fitting a specific k range

2013-12-05 Thread Scott Calvin
I love the warnings Artemis gives! They're not just for novices--they often catch when I've made a dumb mistake somewhere. I praise them, defend them, and generally think Bruce has done a wonderful thing by having them. The out of range default warning, however, I find counterproductive and

Re: [Ifeffit] fitting a specific k range

2013-12-05 Thread Matt Newville
Hi Scott, On Thu, Dec 5, 2013 at 4:56 PM, Scott Calvin scal...@sarahlawrence.edu wrote: I love the warnings Artemis gives! They're not just for novices--they often catch when I've made a dumb mistake somewhere. I praise them, defend them, and generally think Bruce has done a wonderful thing