【MATALAB學習】繪製三維圖

1、繪製三維線圖

>>theta = 0:pi/50:6*pi;
>>x=cos(theta);
>>y=sin(theta);
>>z=0:300;
>>plot3(x,y,z);

2、繪製三維曲面圖

>>x=-3:3;
>>y=-3:3;

>>[X,Y]=meshgrid(x,y);

(meshgrid將x生成7行，y生成7列)

>>Z=X.^2+Y.^2;
>>surf(X,Y,Z);

>>x=-3:0.5:3;
>>y=-3:0.5:3;
>>[X,Y]=meshgrid(x,y);
>>Z=sin(X)+sin(Y);
>>surf(X,Y,Z);