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 build an equation for nonlinear curve fitting		  New Topic  Reply to Topic
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ali1989

China
1 Posts
Posted - 10/06/2021 :  12:05:27 PM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
I am trying to curve fitting using this equation:


I don't know how to build this equation in origin. Kindly, help me.

Thanks and Regards
Edited by - ali1989 on 10/06/2021 12:06:47 PM

YimingChen

1609 Posts
Posted - 10/06/2021 :  3:31:15 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Please check this page on defining a fitting function.
https://www.originlab.com/doc/tutorials/userdef-fitfunc

James
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ShivangiShree

USA
1 Posts
Posted - 10/07/2021 :  2:35:59 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hello,

I have trying to fit Lorentian dip by user define expression but it is showing error.

Could anyone help me?
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snowli

USA
1386 Posts
Posted - 10/07/2021 :  2:59:33 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
What's the error message?
Do you mind send send the fdf file u created?

U can find it from Help: Open Folder: User Files Folder.
Then go to \fitfunc\ subfolder.

Thanks, Snow
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