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 Multiple Peak Fit Gaussian error

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T O P I C    R E V I E W
RitaSN Posted - 11/11/2025 : 09:23:32 AM
Origin Ver. and Service Release (Select Help-->About Origin): OriginPro 2021b
Operating System: Windows

Hello!
I have an histogram and I would like to do a multipeak fit (Gauss). However, after the fit, the values that appear for XC, etc. are completely wrong and the curve for the fit itself does not show on the graph...it's clearly not doing the fit right.

I used to do this regularly with an older version of Origin (latest 2020), following the steps: (select histogram bars) Analysis -> Peaks and Baseline -> Multiple Peak Fit -> Gauss -> OK (...select the peaks and fit)...and everything was fitted correctly.
But now with the new version (I think that's my "problem", that the software changed), it asks me for data selection that it didn't ask for before. Then, I select the sheet where the values are inserted (because I cannot use any function of choosing the range in the graph; I cannot make any of them work) and fit/open NLFit but the values generated are all wrong and no fit appears on the graph.

I don't know what else to do - is there anybody who can help me?

Thank you in advance,
Rita
2   L A T E S T    R E P L I E S    (Newest First)
RitaSN Posted - 11/11/2025 : 10:45:46 AM
Hello Snow,

I realize my mistake now - what you sent actually helped me!
Thank you very much!

Have a nice evening,
Best,
Rita
snowli Posted - 11/11/2025 : 09:39:18 AM
Hi Rita,

Please read this FAQ for fit histogram
https://www.originlab.com/doc/Quick-Help/CurveFit-on-Histogram

Thanks, Snow

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