怎么用matlab画线性拟合图x=[ 17.5 17.43 16 14.93 14.04 12.9 13.07 12.4 12.45 13.3 13.92 13.91 14.1 15.63 15.34 15.47 15.9115.91 16.3 15.83 15.7 16.3 16.28 15.34 14.03 12.6 13 12.18 11.57 11.4 11.2];y=[22.71 23.74 23.5 23 23 17 20 19.7 19 20 2
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/03 03:15:21
![怎么用matlab画线性拟合图x=[ 17.5 17.43 16 14.93 14.04 12.9 13.07 12.4 12.45 13.3 13.92 13.91 14.1 15.63 15.34 15.47 15.9115.91 16.3 15.83 15.7 16.3 16.28 15.34 14.03 12.6 13 12.18 11.57 11.4 11.2];y=[22.71 23.74 23.5 23 23 17 20 19.7 19 20 2](/uploads/image/z/7107667-43-7.jpg?t=%E6%80%8E%E4%B9%88%E7%94%A8matlab%E7%94%BB%E7%BA%BF%E6%80%A7%E6%8B%9F%E5%90%88%E5%9B%BEx%3D%5B+17.5+17.43+16+14.93+14.04+12.9+13.07+12.4+12.45+13.3+13.92+13.91+14.1+15.63+15.34+15.47+15.9115.91+16.3+15.83+15.7+16.3+16.28+15.34+14.03+12.6+13+12.18+11.57+11.4+11.2%5D%3By%3D%5B22.71+23.74+23.5+23+23+17+20+19.7+19+20+2)
怎么用matlab画线性拟合图x=[ 17.5 17.43 16 14.93 14.04 12.9 13.07 12.4 12.45 13.3 13.92 13.91 14.1 15.63 15.34 15.47 15.9115.91 16.3 15.83 15.7 16.3 16.28 15.34 14.03 12.6 13 12.18 11.57 11.4 11.2];y=[22.71 23.74 23.5 23 23 17 20 19.7 19 20 2
怎么用matlab画线性拟合图
x=[ 17.5 17.43 16 14.93 14.04 12.9 13.07 12.4 12.45 13.3 13.92 13.91 14.1 15.63 15.34 15.47 15.9115.91 16.3 15.83 15.7 16.3 16.28 15.34 14.03 12.6 13 12.18 11.57 11.4 11.2];
y=[22.71 23.74 23.5 23 23 17 20 19.7 19 20 21 21.3 22 24 24 24.4 24.1 23.8 23.3 23.5 23.6 24.2 25 25 25 25 24 24 24 15 15];
上面是两组数据,我想问问各位怎么用matlab画出线性拟合图?
最好有仔细的过程,
怎么用matlab画线性拟合图x=[ 17.5 17.43 16 14.93 14.04 12.9 13.07 12.4 12.45 13.3 13.92 13.91 14.1 15.63 15.34 15.47 15.9115.91 16.3 15.83 15.7 16.3 16.28 15.34 14.03 12.6 13 12.18 11.57 11.4 11.2];y=[22.71 23.74 23.5 23 23 17 20 19.7 19 20 2
x=[ 17.5 17.43 16 14.93 14.04 12.9 13.07 12.4 12.45 13.3 13.92 13.91 14.1 15.63 15.34 15.47 15.9115.91 16.3 15.83 15.7 16.3 16.28 15.34 14.03 12.6 13 12.18 11.57 11.4 11.2];
y=[22.71 23.74 23.5 23 23 17 20 19.7 19 20 21 21.3 22 24 24 24.4 24.1 23.8 23.3 23.5 23.6 24.2 25 25 25 25 24 24 24 15 15];
A=polyfit(x,y,2)%2为拟合次数
z=polyval(A,x);
plot(x,y,'k+',x,z,'r') %作出数据点和拟合曲线的图形