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 Nonlinear Curve Fit

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T O P I C    R E V I E W
Lathpandura Posted - 08/11/2022 : 10:40:27 AM
Origin Version and Service Release: OriginPro 9.0.0 (64-bit) SR2 b87
Operating System: Windows 10

Hi All;

I was wondering how to fit a curve for the 2D data given below. Those data from a spectrum (Normalized Counts vs. Energy). I was trying to use "nonlinear curve fit"using "Levenberg-Marquardt algorithm". I tried different options in the tool and I had no luck. The final curve fitting should be similar to image I attached from an article. Any advice regarding this highly appreciated. Thank You!





Best Regards;

Lakshitha
1   L A T E S T    R E P L I E S    (Newest First)
YimingChen Posted - 08/11/2022 : 10:57:20 AM
Do you know what fitting function to use for the fitting? From the image, it looks like a multiple peak fitting with background subtraction. If that's the case, you will need to use the Peak Analyzer tool. Thanks.
https://www.originlab.com/doc/en/Tutorials/PeakFitting-Baseline

James

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