[Ifeffit] synthesis of EXAFS via larch

Katy Smith katy.g.smith at gmail.com
Tue Mar 20 11:34:37 CDT 2018

I seem to be able to make some progress in using Larch, thanks to the
developers. I wish to produce a plot in R rather than k, what would be the
equivalent commands to ff2chi, path.k etc as per the

Thanks, K

On 19 March 2018 at 18:53, Matt Newville <newville at cars.uchicago.edu> wrote:

> Hi Katy,
> On Mon, Mar 19, 2018 at 12:39 PM, Katy Smith <katy.g.smith at gmail.com>
> wrote:
>> Dear Colleagues,
>> I am aiming to use Larch to synthesise EXAFS spectra for metal oxides and
>> I wonder if that would be the right way. I can synthesise the paths in
>> Demeter/Artemis but I have no idea how to sum them in order to obtain a
>> single EXAFS spectrum. Hence, the interest in Larch hoping that it can do
>> what I am looking for.
> You might find the examples at
>   http://xraypy.github.io/xraylarch/xafs/feffpaths.html
> helpful.  In particular,
>   http://xraypy.github.io/xraylarch/xafs/feffpaths.html#
> example-adding-feff-files
> shows how to sum paths together.  The Artemis GUI can help you do this,
> but being able to do this at the scripting level (aka "the hard way") is
> really not that hard, and can give you much more power.
> --Matt Newville
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