Drawing cross sectional views of a body using .mat file

hello,

I have this data of a cylinder

The first column is the length of each section in meters starting from 0 till the end of cylinder at 0.4960.

The second column is the outer diameter and the third column is the inner diameter.

I want to draw its cross sectional view on matlab.

I have this code

for i =1:1:1
  MD(:,1) = MD(:,1)
    a = size(MD,1);
    for j =1:1:(a-1)
        coord = MD(j:j+1,:);
        rectangle('Position',[coord(1,1) 0 coord(2,1)-coord(1,1) coord(1,2)])
        axis([0 0.2 0 0.02])
        hold on
    end
end

This code draws the rectangles but they are not correct I want to draw some thing like this

it should draw rectangles, but two rectangles for hollow cylinder and 1 for non hollow cylinder.

referecenes:http://www.me.umn.edu/courses/me2011/handouts/drawing/blanco-tutorial.html

Does anyone knows?

[darova]

Where is the data? THe code doesn't work

[Chris Dan]

why?

[darova]

Can't run this

Answer 1

[Hrishikesh Borate]

Hi,

I understand that you want to draw the cross-sectional view of a cylinder from the data in MD variable.

Following is an example code, upon which you can build up as per your requirements.

MD = [0, 0.0480, 0.0380;...
    0.0255, 0.0480, 0.0210;...
    0.0770, 0.0660, 0.0210;...
    0.1120, 0.0600, 0.0210;...
    0.1880, 0.0600, 0.0210;...
    0.2030, 0.0600, 0.0350;...
    0.3040, 0.0480, 0.0350;...
    0.4130, 0.0480, 0.0380;...
    0.4960, 0.0480, 0.0380];
[x1, y1, z1] = cylinder(MD(:,2));
[x2, y2, z2] = cylinder(MD(:,3));
z = MD(:,1).*ones(1,21);
halfPts = floor(length(x1)/2);
surf(x1(:,1:halfPts), y1(:,1:halfPts), z(:,1:halfPts));
hold on;
surf(x2(:,1:halfPts), y2(:,1:halfPts), z(:,1:halfPts));
hold off;

For more information, refer to cylinder.