How to draw an elliptical cylinder from given xyz coordinates

Hi everyone,

I have an object that is an elliptical cylinder and I'm trying to draw it in matlab, to run some calculations on the model.

I was wondering how to draw an elliptical cylinder and which xyz coordinates I need to provide for that.

I've tried using mupad, but only managed to create a cylinder so far and not sure if it's even useful for me in any way.

Any ideas?

Thanks in advance, Yotam

[Yotam Levy]

Apologies for the bump, but I could really use some help.

Thanks.

Answer 1

[Walter Roberson]

Create a planar ellipse of the appropriate shape and coordinates. Splice on a column that are the Z coordinates for each layer.

For example,

[x, y] = pol2cart(linspace(0,2*pi,60).', 1);
x = x * 5 + 50;  %axis 5, center 50
y = y * 15 + 75; %axis 15, center 75
z = linspace(20,40,10);  %per-slice z coordinates
xy3d = repmat([x,y], 1, 1, length(z));
xyz = cat(3, xy3d, repmat(reshape(z, 1, 1, length(z), length(x), 2, 1));