matlab 画三维曲线图示例

Posted 2021-11-25 jtailong

A=[2        3        14.2743892
2.1        3.15        14.2642229
2.2        3.3        14.2108503
2.3        3.45        14.2883674
2.4        3.6        13.8931573
2.5        3.75        13.6974583
2.6        3.9        13.4649072
2.7        4.05        13.4445747
2.8        4.2        13.0671555
2.9        4.35        13.4242424
3        4.5        13.142131
3.1        4.65        13.3619744
3.2        4.8        13.1726296
3.3        4.95        13.4750732
3.4        5.1        12.67957
3.5        5.25        12.4635385
3.6        5.4        12.8663735
3.7        5.55        12.8257085
3.8        5.7        12.0454545
3.9        5.85        11.7480939
4        6        12.4622677
4.1        6.15        11.2245356
4.2        6.3        11.3668622
4.3        6.45        12.3059629
4.4        6.6        11.7595308
4.5        6.75        12.2627566
4.6        6.9        11.5371455
4.7        7.05        10.8369502
4.8        7.2        11.4087977
4.9        7.35        10.47478
5        7.5        10.9424243];
x=A(:,1);y=A(:,2);z=A(:,3);
scatter(x,y,5,z)%散点图
figure
[X,Y,Z]=griddata(x,y,z,linspace(min(x),max(x))‘,linspace(min(y),max(y)),‘v4‘);%插值
pcolor(X,Y,Z);shading interp%伪彩色图
figure,contourf(X,Y,Z) %等高线图
figure,mesh(X,Y,Z)%三维曲面

　　

这是一个集成的画法