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T O P I C    R E V I E W
rolg Posted - 11/12/2015 : 11:11:39 AM
Origin Ver. and Service Release (Select Help-->About Origin):9
Operating System:windows 7

Hello,
Pls I'm trying to do a non-linear regression to obtain the parameters C and D in the expression below:

y = C(1 - erf(x/sqrt(D*31104000))).

It keeps bringing the message: Fit did not converge. Please what should I do?

O.R.Ogirigbo
1   L A T E S T    R E P L I E S    (Newest First)
Echo_Chu Posted - 11/13/2015 : 03:47:10 AM
Hi,

Please look at the quick help below for some possible reasons that the fit can be converge

http://www.originlab.com/doc/Quick-Help/BadFitResult-Solution

Echo
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