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 Fitting a square root		  New Topic  Reply to Topic
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GravityX

3 Posts
Posted - 10/25/2024 :  6:18:24 PM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
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?

NicholasSupport

USA
46 Posts
Posted - 10/25/2024 :  7:00:20 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
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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