3D drawing example

Instance of a ： Draw a mountain surface ： The most basic command is mesh command , In addition, there is meshc command （ Basic contour lines are added ）,meshz command （ The grid graph used to draw graphics and the grid graph of the zero plane ）.

t=-4:0.1:4
[X,Y]=meshgrid(t)
Z=peaks(X,Y)
subplot(1,2,1)
mesh(X,Y,Z),hidden on
title(' Don't show grid ')

meshz command ：

t=-4:0.1:4
[X,Y]=meshgrid(t)
Z=peaks(X,Y)
subplot(1,2,1)
meshz(X,Y,Z),hidden on
title(' Don't show grid ')

meshc command ：

t=-4:0.1:4
[X,Y]=meshgrid(t)
Z=peaks(X,Y)
subplot(1,2,1)
meshc(X,Y,Z),hidden on
title(' Don't show grid ')

 

Real column II ： Draw a function surface

x=-5:0.1:5
[X,Y]=meshgrid(x)
Z=cos(sqrt(X.^2+Y.^2))./sqrt(X.^2+Y.^2)
subplot(2,2,1)
plot3(X,Y,Z)
title('plot3')
subplot(2,2,2)
mesh(X,Y,Z)
title('mesh')
subplot(2,2,3)
meshc(X,Y,Z)
title('meshc')
subplot(2,2,4)
meshz(X,Y,Z)
title('meshz')