[Ifeffit] unable to export xdi file in xas viewer

[Matt Newville]

Hi George,

Hm, sorry about that.  It seems to be saying that the parameter
uncertainties weren't calculated correctly.  It probably should not even be
trying to estimate the uncertainty in the model.  I believe it should be
fixed in git master for larch, and I'll see about looking for this in lmfit
too.

On Mon, Apr 20, 2020 at 4:00 PM George Sterbinsky <
GeorgeSterbinsky at u.northwestern.edu> wrote:

> Hello,
>
> When attempting to export an xdi file for a pre-edge peak fit in XAS
> viewer, the error message below prints to the terminal and the xdi file is
> not generated. I can provide the project file and instructions for
> generating the error message if that would be helpful.
>
> Thank you,
> George
>
>
> Traceback (most recent call last):
>   File
> "/anaconda3/lib/python3.7/site-packages/larch/wxxas/prepeak_panel.py", line
> 369, in onExportFitResult
>     yerr=yerr, x=x)
>   File
> "/anaconda3/lib/python3.7/site-packages/larch/io/export_modelresult.py",
> line 60, in export_modelresult
>     delta_fit = result.eval_uncertainty(result.params, **kwargs)
>   File "/anaconda3/lib/python3.7/site-packages/lmfit/model.py", line 1488,
> in eval_uncertainty
>     dval = pars[pname].stderr/3.0
> TypeError: unsupported operand type(s) for /: 'NoneType' and 'float'
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-- 
--Matt Newville <newville at cars.uchicago.edu> 630-252-0431
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