zxec2.m

matlab的拟合工具包

x=0:0.1:1;
y=[-0.447,1.978,3.28,6.16,7.08,7.34,7.66,9.56,9.48,9.30,11.2];
A=polyfit(x,y,2)
z=polyval(A,x);
plot(x,y,'k+',x,z,'r')