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ahmet7753 |
Posted - 12/24/2015 : 4:51:27 PM Hi, I'm using originlab 2016.
Here is my datas and the graph.
I have a formula and it's a+(b*T)+(c*T^2)
It's thermodynamics formula.
I will give the values of a,b,c to the function but I need to use x values that placed in graph X-axis as T.
How can I do that?
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1 L A T E S T R E P L I E S (Newest First) |
Shirley_GZ |
Posted - 12/25/2015 : 01:05:15 AM Hi,
You can define a user-defined function and then use it to do a linear curve fitting.
When you do fitting, you can give initial values for these three parameters.
See details in the tutorials below: http://www.originlab.com/doc/Tutorials/Fitting-NLFit-Basic http://www.originlab.com/doc/Tutorials/UserDef-FitFunc
If any problem, please let me know.
Thanks, Shirley
Originlab Technical Service Team |
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