polyfix(x,y,n,xfix,​yfix,xder,dydx)

版本 1.3.1.2 (2.7 KB) 作者: Are Mjaavatten
Fit polynomial p to data, but match exactly at one or more points
5.0
(19)
4.1K 次下载
更新时间 2020/1/20

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编者注: This file was selected as MATLAB Central Pick of the Week

Sometimes we want to fit a polynomial to some data, but want to force a perfect match to some known values at one or more points. This function returns such a polynomial.

引用格式

Are Mjaavatten (2024). polyfix(x,y,n,xfix,yfix,xder,dydx) (https://www.mathworks.com/matlabcentral/fileexchange/54207-polyfix-x-y-n-xfix-yfix-xder-dydx), MATLAB Central File Exchange. 检索来源 .

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版本 已发布 发行说明
1.3.1.2

Changed image
1.3.1.1

Added image
1.3.1.0

Fixed the error in version 1.3.0.0 pointed out by Jacob Bresler.
1.3.0.0

As requested by Jacob Bresler, I have added optional outputs S and mu, to make the output from polyfix conform with polyfit
1.2.0.0

Fixed trivial errors in the help section
1.1.0.0

Version 1.1 includes an option for specifying derivatives. p is now a row vector, for consistency with polyfit
1.0.0.0