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fit

于 2021-02-19 发布 文件大小:29KB
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  Matlab中提供了一种快速实现多项式拟合的方法函数polyfit()函数, 其格式:p=polyfit(x,y,n)其中x,y为样本向量,n为拟合的多项式的项数。下面拟f(x)=sinx+x,在区间【-3,3】上以0.5为间隔进行拟合。(Matlab provides a fast way to achieve polynomial fitting function polyfit () function, The format: p = polyfit (x, y, n) where x, y as the sample vector, n is the number of items of polynomial fitting. The following proposed f (x) = sinx+ x, the interval-3,3】 【intervals on the order of 0.5 to fit.)

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