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 Fitting a square root

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T O P I C    R E V I E W
GravityX Posted - 10/25/2024 : 6:18:24 PM
Hi

I have done an experiment in which I measured the polarisation of a ferroelectric as a function of temperature. I have taken several measurement results and am now supposed to plot them graphically, with the error in the y-direction and a root fit.

The plot regarding the error in the y-direction was no problem, but unfortunately I don't know how to fit the root. I have only found linear fits and unfortunately I can't find anything on the internet.

The fit should look like the screenshot below, does anyone know how to do this in Origin?

1   L A T E S T    R E P L I E S    (Newest First)
NicholasSupport Posted - 10/25/2024 : 7:00:20 PM
Hello GravityX,

Have you explored the options available in the Non-Linear Fitting dialog?

After plotting your data in Origin, go to the Analysis menu > Fitting > Nonlinear Curve Fit. In the function selection box, you can select "Power" as the category then take a look at the functions there.

Let me know where this puts you.

Best,

Nicholas G.
nicholas@originlab.com
OriginLab Technical Support Team

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