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 Fit did not convarge		  New Topic  Reply to Topic
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Rafael89

Armenia
5 Posts
Posted - 05/21/2014 :  05:56:52 AM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Origin Ver. 8.6
Operating System:Mac OS X

Dear All,

I am trying to fit following function

(G/(n*x))*(1-((T/G)*(log(k/(log(r)*x))+(G/T)+0.577216))^n)

with initial parameters x=0.4; k=1E-3; G=100; are not fixed
and T=4.13; n=0.66666; are fixed

to following data
dropbox.com/s/k9ru7xf45t04vsw/Data

However fit is not converging, I tried also different values of parameters but still did not get the fit. Is anyone knows how to solve this issue.

Rafael89

Armenia
5 Posts
Posted - 05/21/2014 :  08:01:04 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
I am fitting on log linear scale (X axis Log, Y axis linear )
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JacquelineHe

287 Posts
Posted - 05/22/2014 :  07:00:50 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi,

I am afraid I cannot open the dropbox link of your data.

Could you mind to send us your data and question by Email?
Tech Support department Email: tech@originlab.com

And please send us with your detailed version and serial number information? You can check it by selecting ''Help: About Origin'' in the menu.

Thanks
Jacqueline
OriginLab
Edited by - JacquelineHe on 05/22/2014 07:01:46 AM
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