Plot a cyinder with height from one value to another

I want to plot a cylinder with height that goes from -4 to 4 and radius 2?

[John D'Errico]

What have you tried? If nothing, why not? Did you read the help for cylinder? WHY NOT?

[Stephen23]

Read the MATLAB help:

https://www.mathworks.com/help/matlab/ref/cylinder.html

[F.O]

Yes, I have read that but it didn't tell you how to change the height or make it go from negative values to positive values which we always have in mathematics problems.

Answer 1

[Star Strider]

I can’t determine if this is a homework assignment or not.

The plot is straightforward:

r = 2;
t = linspace(0, 2*pi);
cyl = [r*cos(t); r*sin(t)];

figure(1)
plot(cyl(1,:), cyl(2,:))

figure(1)
surf([cyl(1,:); cyl(1,:)], [cyl(2,:); cyl(2,:)], [-4*ones(1,size(cyl,2)); 4*ones(1,size(cyl,2))])
grid on
axis equal

[F.O]

Not assignment but i wanted to plot a cylinder with a plane thate intersect with it to calculate the line integral over the curve of intersection

[Star Strider]

My code will plot the cylinder, as you requested.

I leave the rest to you.