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 Nonlinear Curve Fitting		  New Topic  Reply to Topic
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rainer

Aachen, Germany
1 Posts
Posted - 06/11/2000 :  1:02:00 PM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
I am using Origin 5 and I have problems in managing a nonlinear curve fitting of a user-defined function with 1 independent variable (x) and 2 dependent variables (y_1,y_2). The value of the y_2 is constant, because Origin uses always the same x to compute y_2.

greg

USA
1379 Posts
Posted - 06/14/2000 :  8:39:00 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
The release version of 5.0 did have a problem filling in the dataset for the second dependent variable in the situation you describe. The function parameters are calculated correctly and you can correct the problem by using Set Column Values on the second Y column in the NLSF worksheet and enter the same expression used in the function definition of the second dependent variable. This should be done immediately after fitting while parameter values are still valid.

This problem was addressed in the Patch for version 5.0 which is available on our Downloads page.
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