| T O P I C R E V I E W |
| kikzzz |
Posted - 06/14/2015 : 5:09:51 PM
Origin Ver: 9.1.
Service Release: b215
Operating System: windows 8 64-bit
I would like to use fitting function based on formula like this:
How can I do it right?
I tried define new nolinear fitting function:
As a result, I received an abnormal curve.
Where did I make a mistake? |
| 1 L A T E S T R E P L I E S (Newest First) |
| jasonzhao |
Posted - 06/14/2015 : 10:21:34 PM
Hello,
The steps in graph above seems no problem.
After you setup your fitting function, you can use
http://www.originlab.com/doc/X-Function/ref/simcurve
Analysis: Fitting: Simulate Curve
to see and adjust the shape of curve, which helps you to find the initial value.
If the initial value for a b c d is not close to the final results, the fitting may not be well.
Besides, would you please make a image show the abnormal curve?
Best regards!
Jason
OriginLab Technical Service |
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