%%多項(xiàng)式擬合
clc
clear?all
close?all
load?polyfitnihedata?x?y
figure;
p=polyfit（xy5）;??????%擬合五階多項(xiàng)式
z=polyval（px）;
plot（xy?‘.‘?xz‘:‘）%在同一個(gè)圖形里看他們的擬合程度

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????文件?????????187??2013-10-22?10:32??polyfit?nihe\polyfitnihe.m
?????文件?????????649??2013-10-22?13:35??polyfit?nihe\test24.mat
?????文件????????1486??2013-12-27?20:26??polyfit?nihe\yuce.m
?????文件????????1045??2013-10-19?21:14??polyfit?nihe\最小二乘法擬合曲線.txt