//=== === === === === === === === === === === === === === = //函數(shù)說明 //函數(shù)名稱：PolyFit //函數(shù)功能：最小二乘法曲線擬合 //使用方法：double *x ---- 存放n個(gè)數(shù)據(jù)點(diǎn)的X坐標(biāo) // double *y ---- 存放n個(gè)數(shù)據(jù)點(diǎn)的Y坐標(biāo) // int n -------- 給定數(shù)據(jù)點(diǎn)個(gè)數(shù) // double *a ---- 返回m-1次擬合多項(xiàng)式的m個(gè)系數(shù) // int m -------- 擬合多項(xiàng)式的項(xiàng)數(shù)，即擬合多項(xiàng)式的最高次為m-1。要求m<=n,且 // m<=20。若m>n或m>20，則本函數(shù)自動(dòng)按m=min{n,20}處理 // double *dt --- dt[0]返回?cái)M合多項(xiàng)式與各數(shù)據(jù)點(diǎn)誤差的平方和；dt[1]返回?cái)M合多 // 項(xiàng)式與各數(shù)據(jù)點(diǎn)的誤差絕對值之和；dt[2]返回?cái)M合多項(xiàng)式與各數(shù)據(jù) // 點(diǎn)誤差絕對值的最大值 //注意事項(xiàng)：擬合多項(xiàng)式的形式為 y = b0 + b1*(x-Xavr)...
標(biāo)簽： PolyFit 函數(shù) 最小二乘法
上傳時(shí)間： 2015-07-19
上傳用戶：waizhang
MATLAB插值與擬合（線性擬合函數(shù)：regress() 多項(xiàng)式曲線擬合函數(shù)：PolyFit( ) 多項(xiàng)式曲線求值函數(shù)：polyval( ) 多項(xiàng)式曲線擬合的評價(jià)和置信區(qū)間函數(shù)：polyconf( ) 穩(wěn)健回歸函數(shù)：robust( ) 向自定義函數(shù)擬合 ）
標(biāo)簽： polyconf regress PolyFit polyval
上傳時(shí)間： 2015-10-08
上傳用戶：qb1993225
函數(shù)說明 //函數(shù)名稱：PolyFit //函數(shù)功能：最小二乘法曲線擬合
標(biāo)簽： PolyFit 函數(shù) 最小二乘法 曲線擬合
上傳時(shí)間： 2014-01-06
上傳用戶：cjl42111
多項(xiàng)式曲線擬合 任意介數(shù) Purpose - Least-squares curve fit of arbitrary order working in C++ Builder 2007 as a template class, using vector<FloatType> parameters. Added a method to handle some EMathError exceptions. If do NOT want to use this just call PolyFit2 directly. usage: Call PolyFit by something like this. CPolyFit<double> PolyFitObj double correlation_coefficiant = PolyFitObj.PolyFit(X, Y, A) where X and Y are vectors of doubles which must have the same size and A is a vector of doubles which must be the same size as the number of coefficients required. returns: The correlation coefficient or -1 on failure. produces: A vector (A) which holds the coefficients.
標(biāo)簽： Least-squares arbitrary Purpose Builder
上傳時(shí)間： 2013-12-18
上傳用戶：宋桃子
function [R,k,b] = msc(A) % 多元散射校正 % 輸入待處理矩陣，通過多元散射校正，求得校正后的矩陣 %% 獲得矩陣行列數(shù) [m,n] = size(A); %% 求平均光譜 M = mean(A,2); %% 利用最小二乘法求每一列的斜率k和截距b for i = 1:n a = PolyFit(M,A(:,i),1); if i == 1 k = a(1); b = a(2); else k = [k,a(1)]; b = [b,a(2)]; end end %% 求得結(jié)果 for i = 1:n Ai = (A(:,i)-b(i))/k(i); if i == 1 R = Ai; else R = [R,Ai]; end end
上傳時(shí)間： 2020-03-12
上傳用戶：15275387185
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