Curve fitting in Matlab

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本文探讨了使用Curve Fitting Toolbox进行多于两个独立变量的数据拟合问题。由于该工具箱在R2009a版本中不支持多变量拟合，文章提供了通过自定义目标函数并利用Optimization Toolbox来解决这一限制的方法。

cftool is sufficient in most cases, though it can not fit data to more than two independent variables(R2009a)：

Technical Solutions

Is it possible to fit data to more than two independent variables using Curve Fitting Toolbox 2.0 (R2009a)?

Date Last Modified: Monday, July 13, 2009

Solution ID:		1-A3U90C
Product:		Curve Fitting Toolbox
Reported in Release:		R2009a
Platform:		Unknown
Operating System:		Unknown

Subject:

Is it possible to fit data to more than two independent variables using Curve Fitting Toolbox 2.0 (R2009a)?

Problem Description:

I would like to use Curve Fitting Toolbox to fit my data to more than two independent variables.

Solution:

The ability to fit data to more than two independent variables is not available in Curve Fitting Toolbox.

To work around this issue, you can generate your own objective function and use functions from Optimization Toolbox to fit your data to more than two variables.