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 Linear combination curve fitting		  New Topic  Reply to Topic
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nelsonnc

USA
3 Posts
Posted - 03/13/2017 :  8:26:41 PM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Origin Ver. and Service Release (Select Help-->About Origin):
Operating System: OriginPro 2015

Hello-

I need to curve fit by taking linear combinations of column data. That is, [(a)*(col(1))] + [(b)*col(2))], where a+b=1. This is very easy and straight forward in excel. However, I need to do this to large data sets and thus am looking to automate the task. Any help is appreciated. Thanks

Nick

Hideo Fujii

USA
1582 Posts
Posted - 03/15/2017 :  12:24:57 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi Nick,

You can try the method which is described in this tutorial:

http://www.originlab.com/doc/Tutorials/Fitting-Datasets

Of course, in your case, you can define the function as:
y = A*col(1) + (1-A)*col(2)
Hope this helps.

--Hideo Fujii
OriginLab
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