MATLAB 3D Cylinder()

The cylinder() function in MATLAB is a powerful tool for creating 3D graphical objects. It creates a cylinder with the specified radius and height. The function returns the x, y, and z coordinates of the vertices that make up the cylinder.

Syntax

[x, y, z] = cylinder(radius, n)

Inputs

• radius: The radius of the cylinder. If radius is a scalar value, then the same radius is used for both ends of the cylinder. If radius is a 1x2 vector, then it specifies the different radii for the top and bottom of the cylinder.

• n: The number of points to use to create the cylinder. If not specified, then n defaults to 20.

Outputs

• x, y, and z: Arrays that contain the coordinates of the vertices that make up the cylinder.

Example

% Create a cylinder with radius 1 and height 3
[x, y, z] = cylinder(1, 20);
z = z * 3;
surf(x, y, z, 'FaceAlpha', 0.7)

This code creates a cylinder with radius 1 and height 3. The z coordinates are scaled by 3 to make the cylinder taller. The surf() function is then used to create a surface plot of the cylinder with a face alpha value of 0.7. The resulting plot is shown below:

Conclusion

The cylinder() function in MATLAB is a simple yet powerful tool for creating 3D graphical objects. Its flexibility allows for the creation of a wide variety of different cylinder shapes.