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
 All Forums
 Origin Forum
 Origin Forum
 Nonlinear Curve Fitting

Note: You must be registered in order to post a reply.
To register, click here. Registration is FREE!

Screensize:
UserName:
Password:
Anti-Spam Code:
Format Mode:
Format: BoldItalicizedUnderlineStrikethrough Align LeftCenteredAlign Right Horizontal Rule Insert HyperlinkUpload FileInsert Image Insert CodeInsert QuoteInsert List
   
Message:

* HTML is OFF
* Forum Code is ON
Smilies
Smile [:)] Big Smile [:D] Cool [8D] Blush [:I]
Tongue [:P] Evil [):] Wink [;)] Clown [:o)]
Black Eye [B)] Eight Ball [8] Frown [:(] Shy [8)]
Shocked [:0] Angry [:(!] Dead [xx(] Sleepy [|)]
Kisses [:X] Approve [^] Disapprove [V] Question [?]

 
Check here to subscribe to this topic.
   

T O P I C    R E V I E W
Menino11 Posted - 01/15/2009 : 11:38:49 AM
Origin Ver.8 and SR4:
Operating System: XP

Hello

I'm using SR4 after using SR0, and the fitting tool for nonlinear curves seems to work differently from before.
If I use the dialog box for Nonlinear Curve Fit and select the Spectroscopy category (and even using the Origin Basic Functions) for analyzing my spectrum, I get two different fittings to the same graph (one in SR0 and another in SR4), with apparently the same initial parameters. Same data intervals and so on.
The problem, is that the data that I get with SR0 was more accurate that with SR4.
Something happen in the SR4 release that changed the fitting process,in a way that I need to make some changes before I analyze the graph?










If anyone could help me understand why this happen, and how to resolve it..
Thanks

LS
3   L A T E S T    R E P L I E S    (Newest First)
Deanna Posted - 01/18/2009 : 8:22:59 PM
Then please upload to our FTP.

please kindly follow the instructions in the following web page to do so:
http://www.originlab.com/index.aspx?s=1&lm=123&pid=752

Deanna
OriginLab Technical Services
Menino11 Posted - 01/16/2009 : 07:11:47 AM
I tried, but the General Contact Form only allows files to 200KB..
The File with that data has 812KB.....

LS
Deanna Posted - 01/15/2009 : 10:42:37 PM
LS,

We need more information to find out what happens. Please send us the opj with the source data and fit report. Also, please tell us the initial values of the parameters. With the information, we can do more testings to see what the problem is.

Deanna
OriginLab Technical Services

The Origin Forum © 2020 Originlab Corporation Go To Top Of Page
Snitz Forums 2000