MATLAB: Draw a 3D model having x,y and z coordinates

MATLABmodel

Hello everyone i would like to know if you can help me with this question. I have an (6000×3) array, where the columns represents x,y and z coordinates of a point that when u link all of the points , they form a cylinder.
Is posible to create the model with those coordinates?

Best Answer

Your coordinates given are not forming a full cylinder. If you join them, you will not get a perfect cylinder as expected. As you said the points form a cyinder; I used the points to get radius and height of the cylinder, from this cylinder has been plotted. 
data = xlsread("coordinates.xlsx") ; 
x = data(:,1) ; 
y = data(:,2) ; 
z = data(:,3) ; 
% Get radius of the Cylinder 
Radius = mean(sqrt(x.^2+y.^2)) ;  
% Center of cylinder 
C = [0. 0.] ; 
% Get height of the cylinder 
Height = max(z) ; 
% form cylinder 
theta = 360. ;           % Angle of the Cylinder
%
NH = 50 ;                % Number of Elements on the Height
NT = 50 ;               % Number of Angular Dicretisation 
% Discretizing the Height and Angle of the cylinder
nH = linspace(0,Height,NH) ;
nT = linspace(0,theta,NT)*pi/180 ;
[H T] = meshgrid(nH,nT) ;
% Convert grid to cylindrical coordintes
X = Radius*cos(T); 
Y = Radius*sin(T);
Z = H ;
surf(X,Y,Z)
hold on
plot3(x,y,z,'.k')
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