概述
Matlab基本函数-cylinder函数
1、cylinder函数：绘制三维圆柱图
2、用法说明：
(1)[x,y,z]=cylinder 函数返回一半径和高度都为1的圆柱体x，y，z轴的坐标值，圆柱体沿其周长有20个等距分布的点
(2)[x,y,z]=cylinder(r) 函数一个半径为r、高度为1的圆柱体的x，y，z轴的坐标值，圆柱体沿其周长有20个等距分布的点
(3)[x,y,z]=cylinder(r,n) 函数一个半径为r、高度为1的圆柱体的x，y，z轴的坐标值，圆柱体沿其周长有n个等距分布的点
(4)cylinder(...) 函数只绘制圆柱，没有任何的输出参量。其他参量及结果同上
3、实例
3.1、[x,y,z]=cylinder 函数
>> [x,y,x] = cylinder
x =
Columns 1 through 17
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
Columns 18 through 21
0 0 0 0
1 1 1 1
y =
Columns 1 through 10
0 0.3090 0.5878 0.8090 0.9511 1.0000 0.9511 0.8090 0.5878 0.3090
0 0.3090 0.5878 0.8090 0.9511 1.0000 0.9511 0.8090 0.5878 0.3090
Columns 11 through 20
0.0000 -0.3090 -0.5878 -0.8090 -0.9511 -1.0000 -0.9511 -0.8090 -0.5878 -0.3090
0.0000 -0.3090 -0.5878 -0.8090 -0.9511 -1.0000 -0.9511 -0.8090 -0.5878 -0.3090
Column 21
0
0
x =
Columns 1 through 17
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
Columns 18 through 21
0 0 0 0
1 1 1 1
3.2、[x,y,z]=cylinder(r)函数
>> [x,y,z]=cylinder(5)
x =
Columns 1 through 10
5.0000 4.7553 4.0451 2.9389 1.5451 0.0000 -1.5451 -2.9389 -4.0451 -4.7553
5.0000 4.7553 4.0451 2.9389 1.5451 0.0000 -1.5451 -2.9389 -4.0451 -4.7553
Columns 11 through 20
-5.0000 -4.7553 -4.0451 -2.9389 -1.5451 -0.0000 1.5451 2.9389 4.0451 4.7553
-5.0000 -4.7553 -4.0451 -2.9389 -1.5451 -0.0000 1.5451 2.9389 4.0451 4.7553
Column 21
5.0000
5.0000
y =
Columns 1 through 10
0 1.5451 2.9389 4.0451 4.7553 5.0000 4.7553 4.0451 2.9389 1.5451
0 1.5451 2.9389 4.0451 4.7553 5.0000 4.7553 4.0451 2.9389 1.5451
Columns 11 through 20
0.0000 -1.5451 -2.9389 -4.0451 -4.7553 -5.0000 -4.7553 -4.0451 -2.9389 -1.5451
0.0000 -1.5451 -2.9389 -4.0451 -4.7553 -5.0000 -4.7553 -4.0451 -2.9389 -1.5451
Column 21
0
0
z =
Columns 1 through 17
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
Columns 18 through 21
0 0 0 0
1 1 1 1>> [x,y,z]=cylinder(5)
x =
Columns 1 through 10
5.0000 4.7553 4.0451 2.9389 1.5451 0.0000 -1.5451 -2.9389 -4.0451 -4.7553
5.0000 4.7553 4.0451 2.9389 1.5451 0.0000 -1.5451 -2.9389 -4.0451 -4.7553
Columns 11 through 20
-5.0000 -4.7553 -4.0451 -2.9389 -1.5451 -0.0000 1.5451 2.9389 4.0451 4.7553
-5.0000 -4.7553 -4.0451 -2.9389 -1.5451 -0.0000 1.5451 2.9389 4.0451 4.7553
Column 21
5.0000
5.0000
y =
Columns 1 through 10
0 1.5451 2.9389 4.0451 4.7553 5.0000 4.7553 4.0451 2.9389 1.5451
0 1.5451 2.9389 4.0451 4.7553 5.0000 4.7553 4.0451 2.9389 1.5451
Columns 11 through 20
0.0000 -1.5451 -2.9389 -4.0451 -4.7553 -5.0000 -4.7553 -4.0451 -2.9389 -1.5451
0.0000 -1.5451 -2.9389 -4.0451 -4.7553 -5.0000 -4.7553 -4.0451 -2.9389 -1.5451
Column 21
0
0
z =
Columns 1 through 17
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
Columns 18 through 21
0 0 0 0
1 1 1 1
3.3、[x,y,z]=cylinder(r,n) 函数
>> [x,y,z]=cylinder(5,10)
x =
Columns 1 through 10
5.0000 4.0451 1.5451 -1.5451 -4.0451 -5.0000 -4.0451 -1.5451 1.5451 4.0451
5.0000 4.0451 1.5451 -1.5451 -4.0451 -5.0000 -4.0451 -1.5451 1.5451 4.0451
Column 11
5.0000
5.0000
y =
Columns 1 through 10
0 2.9389 4.7553 4.7553 2.9389 0.0000 -2.9389 -4.7553 -4.7553 -2.9389
0 2.9389 4.7553 4.7553 2.9389 0.0000 -2.9389 -4.7553 -4.7553 -2.9389
Column 11
0
0
z =
0 0 0 0 0 0 0 0 0 0 0
1 1 1 1 1 1 1 1 1 1 1
3.4、cylinder(...) 函数
>> cylinder(5)
绘制的圆柱图
最后
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