image thumbnail

Cylinder

version 1.2.0.0 (2.82 KB) by Avni Pllana
This is the improved version of the previously submitted function 'cylinder2.m' .

374 Downloads

Updated 15 May 2011

View License

[X,Y,Z]=cylinder2(x,y,z,r,N,o)

Vectors x, y, z define the central line of cylindrical surface
and vector r defines the radius of cylindrical surface, and has
the same length as x, y, z.

N is the number of points around the circumference. The default value
is N = 100.

Matrix o defines ovality of the directrix (circle) of cylindrical
surface. Its elements take values between 0 and 1 and apply to the
primary and secondary axis of directrix. The defeault values are
o=ones(length(x),2).

Matrices X, Y, Z define the cylindrical surface, surf(X,Y,Z) displays
the cylindrical surface.

Example 1: Horn

f=linspace(0,4*pi,100);
x=cos(f); y=sin(f); z=f; r=-1/99*([1:100]-1)+1;
[X,Y,Z]=cylinder2(x,y,z,r);

Example 2: Pot

x=[0 0 1 1 .5 .5]; y=[0 0 3 3 1.5 1.5];
z=[0 0 2 2 1 1]; r=[0 1 1.5 1.2 1 0];
[X,Y,Z]=cylinder2(x,y,z,r,6); view([-150 25])

Example 3: Plumbing

x=[0 0 0 0 0 0 1 1 1 1 1 1]; y=[0 .2 .2 1 1 .5 .5 1 1 .2 .2 0];
z=[1 1 1 1 0 0 0 0 1 1 1 1]; r=[.2 .2 .1 .1 .1 .1 .1 .1 .1 .1 .2 .2];
o=[1 1 .5 .5 .5 1 1 .5 .5 .5 1 1; 1 1 1 1 1 .5 .5 1 1 1 1 1];
[X,Y,Z]=cylinder2(x,y,z,r,8,o);


Example 4: Triangle , closed central line

f=linspace(0,2*pi,4);
x=cos(f-pi/6); y=sin(f-pi/6); z=zeros(4,1); r=0.2*ones(4,1);
[X,Y,Z]=cylinder3(x,y,z,r); view([0 90])

Cite As

Avni Pllana (2021). Cylinder (https://www.mathworks.com/matlabcentral/fileexchange/31253-cylinder), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2010a
Compatible with any release
Platform Compatibility
Windows macOS Linux
Tags Add Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!