[Ifeffit] Problems importing larch plugins to python
Johan Nilsson
johan.nilsson at chalmers.se
Fri Oct 2 08:58:53 CDT 2015
Hello Bruce,
I added the _larch argument to my feff path and parameters and the script seems to be working now, thank you for spotting that. I'll have a look at the links you provided and I'll try to do some more exafs fitting with larch and hopefully I will get a better understanding of how it all works.
Best regards,
Johan
________________________________________
From: ifeffit-bounces at millenia.cars.aps.anl.gov [ifeffit-bounces at millenia.cars.aps.anl.gov] on behalf of Bruce Ravel [bravel at bnl.gov]
Sent: 02 October 2015 15:17
To: XAFS Analysis using Ifeffit
Subject: Re: [Ifeffit] Problems importing larch plugins to python
On 10/02/2015 09:09 AM, Bruce Ravel wrote:
> It turns out that, when you use
> larch as a python script (as opposed to running it through larch
> itself), every damn thing needs the '_larch=mylarch' argument.
Johan,
I explain why this is necessary at
https://bruceravel.gitbooks.io/larch-plugin-tutorial/content/mback/details.html
Well, that is to say, I explain my best understanding of why it's
necessary. Some of the inner workings of larch are still a bit opaque
to me :)
In any case, when you are at the larch command line (or using larch to
interpret a larch script), it is unambiguous which instance of the
larch interpreter each function is supposed to use. When using larch
as a module in a python script, it is conceivable that more than one
larch interpreter exists. So you have to be explicit.
B
--
Bruce Ravel ------------------------------------ bravel at bnl.gov
National Institute of Standards and Technology
Synchrotron Science Group at NSLS-II
Building 535A
Upton NY, 11973
Homepage: http://bruceravel.github.io/home/
Software: https://github.com/bruceravel
Demeter: http://bruceravel.github.io/demeter/
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