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Can some please help me solve the error in the file

Posted 10 years ago

HI, I am trying to fit model to data, but it is showing an error. Can someone please help me with this. I have attached the mathematica file for the reference.

Thanks, Jaydeep

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POSTED BY: Jaydeep Yadav
4 Replies

The error message tells you exactly what the problem is. It expects a symbol, but you gave it a real.

POSTED BY: Chad Knutson
POSTED BY: Chad Knutson
Posted 10 years ago

HI, Thanks for the reply, But then usually I do the fitting procedure the same way, and it has worked earlier. I am attaching a file where it had worked fine. I am not able to find why the same code is not working in the above file. I will appreciate, if you can please help me find out my mistake.

Thanks

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POSTED BY: Jaydeep Yadav

In the line

fit = NonlinearModelFit[   data, {Model3[ka, Cc, te]}, {ka, 1.67}, {Cc, te}] 

{ka, 1.67} is supposed to be a list of parameters to vary. 1.67 is a constant.

POSTED BY: Bruce Miller
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