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 [Q]During the non-linear curve fit		  New Topic  Reply to Topic
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ydjang

S. Korea
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Posted - 10/11/2006 :  04:45:54 AM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Origin Version (Select Help-->About Origin):7.5
Operating System:windows XP

In making the fitting function, I would like to use worksheet data as one of the fitting parameters. How can I include the worksheet data to the fitting parameter.

Please, help me.
x column of worksheet data is the same with the independent variable of the raw data, for which I try to fit.

Thank you.

zachary_origin

China
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Posted - 10/11/2006 :  09:58:32 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi ydjang,

Maybe you can create a user-defined function with multiple independent variables. In the section of independent variable, define another variable, say 'A', as well as 'x'. See these links for how to fit with multiple independent variables:
http://www.originlab.com/index.aspx?s=9&pid=434
http://www.originlab.com/www/helponline/origin/Fitting_With_Multiple_Independent_Variables.htm

Zachary
OriginLab Technical Services.
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