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 non-linear kinetic models		  New Topic  Reply to Topic
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koukia

Morocco
1 Posts
Posted - 12/15/2015 :  1:32:56 PM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Hello,

I want to fit a data to these non-linear kinetic models : Lagergren's pseudo-first order and Ho's pseudo-second order.

This what i found on the website of OriginLab but it didn't work for me.


Need for your help please.

Thank you

SeanMao

China
288 Posts
Posted - 12/15/2015 :  9:34:28 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi,

If you do not want to fit through apparent fit using linear fit tool, you can fit with our nonlinear fitting tool.

If the function form is explicit where the y can be separated from x, then you can define a fitting function on your own and use it to fit. A sample tutorial is shown below:

http://www.originlab.com/doc/Tutorials/UserDef-FitFunc

If the function you want to fit cannot be separated, you can fit using our implicit fitting by defining an implicit fitting function:

http://www.originlab.com/doc/Tutorials/ImplicitFit-3Var

Regards!

Sean

OriginLab Tech.
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