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
 multi-peak fit using different functions		  New Topic  Reply to Topic
 Printer Friendly
Author Previous Topic Topic Next Topic Lock Topic Edit Topic Delete Topic New Topic Reply to Topic

ghorycon

China
4 Posts
Posted - 02/09/2012 :  01:25:45 AM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Origin Version : 7.0
Operating System: Win XP
I am trying to fit a curve with Gaussian and Lorentzian.
I use the following eqution for fitmulti-peak fit (setting to y-script) (peak2 is Lorenzian Function);
peak1=Ag*exp(-(x-xg)^2/(2*wg^2));
peak2=Al*wl/((x-xl)^2+wl^2);
y=y0+peak1+peak2;
But,i do not know how to set the Parameter Initialization!
Please advice!!! Really need the help!!!

cc261

22 Posts
Posted - 02/25/2012 :  01:32:20 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
try 1stOpt or Auto2Fit, the procedure of parameter initialization is no long needed.
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