The Origin Forum
File Exchange
Try Origin for Free
The Origin Forum
Home | Profile | Register | Active Topics | Members | Search | FAQ | Send File to Tech support
Username:
 Password:
Save Password
Forgot your Password? | Admin Options

 All Forums
 Origin Forum
 Origin Forum
 Fixing the X0 value in the parameters section		  New Topic  Reply to Topic
 Printer Friendly
Author Previous Topic Topic Next Topic Lock Topic Edit Topic Delete Topic New Topic Reply to Topic

Leopoldo.Machado

United Kingdom
1 Posts
Posted - 05/05/2016 :  6:14:28 PM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Hi,

I'm trying to fit several curves using the Logistic (Growth/Sigmoidal) function.
However, some of my data are not fitting properly.

I was able to fit all the curves, with acceptable errors, fixing the X0 value in the parameters section.
But, I don't know how these values (X0, A1, A2) presented in the parameters before the fitting were calculated by Origin.

Can anyone help me with that?
Your message is highly appreciated.
Thanks

Leo

JacquelineHe

287 Posts
Posted - 05/06/2016 :  03:01:49 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi Leo,

If you use our build-in function to fit, before fitting the parameters are initialized.

You can check the Parameter Initialization code in the "Fitting Function Organizer" dialog (from menu, Tools: Fitting Function Organizer ).
http://www.originlab.com/doc/Origin-Help/FitFunc-Organizer-Builder

If you want to know more details about Parameter Initialization, please refer to this help page:
http://www.originlab.com/doc/Origin-Help/FitPara-INI

Thanks
Jacqueline
OriginLab
Go to Top of Page
  Previous Topic Topic Next Topic Lock Topic Edit Topic Delete Topic New Topic Reply to Topic
 New Topic  Reply to Topic
 Printer Friendly
Jump To:
The Origin Forum © 2020 Originlab Corporation Go To Top Of Page
Snitz Forums 2000