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Angel Torriero

Australia
1 Posts
Posted - 10/03/2021 :  6:39:36 PM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Hi,
I'm trying to build a fit function with Origin C which includes a summation function like

y=((2*z*96485*A*)/L)*((1+2*sum(n=1 -> 100)exp((-4*n^2*D*x)/L^2)

How can I define the summation function? Can anyone please help me with the coding?

Thank you very much in advance,

Regards,

Angel

YimingChen

1621 Posts
Posted - 10/04/2021 :  08:51:01 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
You can check this page on using Python to build a summation function:
https://www.originlab.com/doc/python/tools/NLFit-and-Peak-Analyzer

James
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