[Ifeffit] Exporting derivative data

[Bruce Ravel]

Paul,

By default, Athena smooths derivative data three times before plotting it.  
This is controlled by the plot->smoothderiv parameter (which can be set in 
the preferences dialog under the Setting menu).

When you export the derivative data, it is not smoothed.  So, to reproduce 
Athena's plot exactly in some other plotting program, you would need to 
smooth the data using that tool.

Not very WISIWYG, I suppose.  But it still seems like the right solution.  
With exported data that is not smoothed, you have the option to 
smoothing.  Exporting data that is smoothed, you do not have the option 
of unsmoothing!

B

On Sunday, May 30, 2010 06:47:34 am Paul Bingham wrote:
> Hi, I wonder if you can help:
> 
> I'm using Athena to process some XANES data and wish to export the
> derivative data so that I can use a package such as Excel to prepare the
> data for publication. However, the derivative data that is presented
> visually in the graphics window is a much cleaner, smoother data set than
> the one I get when I export it in either deriv Mu(E) or deriv Norm(E). I
> tried the smoothing option in Data-Smooth mu(E) with 3 iterations and
> again with 10 iterations on the interpolative smoothing. Both gave far
> noisier data than the data shown in the Graphics window.
> 
> Please can you tell me how to get exported derivative data that will be
> (more or less) the same as that shown in the graphics window? Basically I'
> hoping for WYSIWYG if that's possible? Any thoughts or suggestions 
would
> be very welcome and thanks for your time.