| songshaoman |
2019-01-25 10:51 |
Maatlab實(shí)現(xiàn)最小二乘擬合
設(shè)置m文件 9SY(EL
function A=nihe(x,y,n)%定義多項(xiàng)式擬合系數(shù)求解函數(shù),% x、y 為輸入數(shù)據(jù)量，n 為擬合次數(shù) mG_BM/$
m=length(x); %測(cè)量數(shù)據(jù)長(zhǎng)度 ` K w7"
X1=zeros(1,2*n); %生成 X 矩陣 k5a\S q}
for i=1:2*n N0Gf0 i>
X1(i)=sum(x.^i); end 9mQ#L<Ps
X2=[m,X1(1:n)]; B
s,as
X3=zeros(n,n+1); co/7l
| |