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 二元方程拟合		  New Topic  Reply to Topic
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huahuagongzi2013

China
3 Posts
Posted - 05/18/2016 :  10:46:08 PM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
请问，origin可以进行二元方程的拟合吗

Echo_Chu

China
Posts
Posted - 05/18/2016 :  10:58:50 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Origin 的surface fitting包含了很多自带的二元方程

菜单 Analysis: Fitting: Nonlinear Surface Fitting 可以打开这个工具

如果有多个自变量和因变量的时候, 也可以自定义函数用Nonlinear Curve Fitting 工具来做到这个. 可以看看下面关于这个的教程

这个教程是关于怎么用Origin自带的多变量函数来做多元的函数拟合.
http://www.originlab.com/doc/Tutorials/Fitting-NLFit-MultiVar


这个教程是关于怎么自定义函数来做多元的函数拟合. y = A0 + A1 * x1 + A2 * x2 + ...

http://www.originlab.com/doc/Tutorials/Fitting-MultiIndepVar
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Echo_Chu

China
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Posted - 05/18/2016 :  11:33:26 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
关于拟合y=f(x1, x2), 这个论坛帖子写得很详细的

http://www.originlab.com/forum/topic.asp?TOPIC_ID=22359
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