9/16/2015
5
Đồ thị trong không gian – 3D
• [x,y] = meshgrid(-2:0.1:2);
• z = y.*exp(-x.^2-y.^2);
• mesh(x,y,z), xlabel('x'), ylabel('y'), zlabel('z')
mesh(x,y,z) surf(x,y,z) surfc(x,y,z)
17
Nguyen Quang Hoang
Department of Applied Mechanics
Đồ thị trong không gian – 3D
• Ví dụ:
x = [-3 : 0.1 : 3]; y = [-3 : 0.1 : 3];
[X, Y] = meshgrid(x,y);
f = exp(-0.2*(X.^2+Y.^2)).*sin(X.^2+Y.^2);
mesh(X,Y,f); surf(X,Y,f) contour3(X,Y,f,30);
2
2
0.2 (
)
2
2
( , )
sin(
),
3
,
3
x
y
z
f x y
e
x
y
x y
18
Nguyen Quang Hoang
Department of Applied Mechanics
