Or just swap...set N's to be the So^2 from a known coordination standard and define an amp for each shell...
e.g. So^2 = 0.8 from standard so all N's set to 0.8, and shell 1 had amp1 in the So^2 position defined as guess,
shell2 has amp2, etc....

On 2018-08-01 8:15 AM, Anatoly Frenkel wrote:
Make it 1 in the N window and make amp*N expression in the S02 window instead. Then use N as a coordination number (fix or vary it).
Anatoly

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Anatoly I. Frenkel
Professor
Department of Materials Science and Chemical Engineering
Stony Brook University
Stony Brook, NY 11794,
Ph: 631-632-2751
Email:  anatoly.frenkel@stonybrook.edu

Joint Appointment:
Chemistry Department, Brookhaven National Laboratory
Upton, NY 11973. Ph: 631-344-3013. Group: 631-344-3494
Email: frenkel@bnl.gov

https://www.bnl.gov/chemistry/bio/FrenkelAnatoly.asp

Spokesperson, Synchrotron Catalysis Consortium (SCC) at BNL
http://you.stonybrook.edu/scc2
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On Wed, Aug 1, 2018 at 11:07 AM, M Solo <sarsol89@gmail.com> wrote:
Hello
Is there a way in artemis to make N, coordination number, a variable to be used in GDS window? I do realize that N and ss are closely linked and do very similar things in the fit, but it seems i may need fractional (average) coordination number for one of the paths, and am fine fixing ss to see where N levels off. 

Thank you very much.

Alex Solov

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