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 build an equation for nonlinear curve fitting

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T O P I C    R E V I E W
ali1989 Posted - 10/06/2021 : 12:05:27 PM
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
3   L A T E S T    R E P L I E S    (Newest First)
snowli Posted - 10/07/2021 : 2:59:33 PM
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
ShivangiShree Posted - 10/07/2021 : 2:35:59 PM
Hello,

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

Could anyone help me?
YimingChen Posted - 10/06/2021 : 3:31:15 PM
Please check this page on defining a fitting function.
https://www.originlab.com/doc/tutorials/userdef-fitfunc

James

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