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 Ftting data "without" equation
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jmb22

USA
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Posted - 04/25/2005 :  3:57:53 PM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Origin Version (Select Help-->About Origin): 7.5
Operating System:WinXP

Hi,

I am trying to do a best fit where the fitting parameters are A, B, and C.

I have my experimental data: col(A) (x-axis) versus col(Exp) (y-axis).
I have 3 more columns (col(G), col(H) and col(I)) that I have to combine to fit to the experimental data. Basically, I have to find the fitting parameters: G1, H1 and I1 that will enable me to fit:

col(Exp)= G1 * col(G) + H1 * col(H) + I1 * col(I)

I have not found the command that will allow me to put columns into the fitting tool rather than a function of x.

Thanx for helping

easwar

USA
1964 Posts

Posted - 04/25/2005 :  4:48:07 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi,

Take a look at this article, and Example 2 therein:
http://www.originlab.com/index.aspx?s=9&pid=434

Easwar
OriginLab

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