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wangzhou0214

3 Posts
Posted - 08/12/2011 :  05:57:00 AM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Origin Ver. and Service Release (Select Help-->About Origin):Origin 8 Pro SR4
Operating System: windows XP professional service pack 3

Hi,

I want to do a 'fit' process of my data which firstly the y value rapidly increased with the increasing of X, then it reached a maximum, after that, the y value turned down and displayed a slowly gradual decrease with the increase of x value. So, how can I do to fit this data for this trend ?

Hideo Fujii

USA
1582 Posts
Posted - 08/12/2011 :  09:42:47 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi wangzhou0214,

I may first try LogNormal function (in Peak Functions category in NLFit) if you don't have specific model at hand....

--Hideo Fujii
OriginLab
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