Extracting Data from a Cell as xyz information

I have a script generated which extracts xyz data from a cell and plots it. This data WAS being extracted from a variable named "cross-sections" but now i need to extract data from a different variable called "polygons" which has a slightly different set up. I can't figure out how to do this little change. Script and data are attached.

vv = polygons;
cla
hold on


for k = 1:1    %length(polygons)
    
    x = [vv{k}(:,1);]; %vv{k}(1,1)];
    y = [vv{k}(:,2);]; %vv{k}(1,2)];
    z = [vv{k}(:,3);]; %vv{k}(1,3)];
    

    plot3(x,y,z,'.-b');
    L1 = [x' ; y' ;z']; 
    N = length(x);
    
    % use 3 points to calculate normal vector of crossection plane
    i1 = 1;                 % first index            
    i2 = round(N/3);        % second index
    i3 = round(2*N/3);      % third index
    v1 = [x(i1)-x(i2) y(i1)-y(i2) z(i1)-z(i2)];
    v2 = [x(i1)-x(i3) y(i1)-y(i3) z(i1)-z(i3)];
    v = cross(v1,v2);       % normal vector of a plane
    a = v(1); b = v(2); c = v(3);
    
    % use normal vector to find approximate centroid
	x0 = (max(x)+min(x))/2;     % approximate centroid X
    y0 = (max(y)+min(y))/2;     % approximate centroid Y
        
    % choose first point for (px, py, pz)
    z0 = (a*(x(1)-x0) + b*(y(1)-y0))/c + z(1);
     
    %circle
    R = 10;
    ac  = sqrt(a*a+c*c);
    abc = sqrt(a*a+b*b+c*c);
    t1 = linspace(0,2*pi,62);
    ct = cos(t1);
    st = sin(t1);
    x1 = x0 + R/ac*(c*ct-a*b*st/abc);
    y1 = y0 + R*ac/abc*st;
    z1 = z0 - R/ac*(a*ct+b*c*st/abc); 

    %draw lines
    P = zeros([],2);
    for i = 1:length(x1)
        plot3([x0 x1(i)],[y0 y1(i)],[z0 z1(i)],'.-r')
        L2= [x0 x1(i) ; y0 y1(i) ; z0 z1(i)]; 
        
        %intersection points
        P(i,:) = InterX(L1,L2)';

    end
end

% Get Z for intersection points 
F = scatteredInterpolant(x,y,z) ; 
P(:,3) = F(P(:,1),P(:,2)) ; 
plot3(P(:,1),P(:,2),P(:,3),'*m')
axis equal
hold off

Thank you!!

Answer 1

[Mahesh Taparia]

Hi,

You can load your data using ‘load’ command.

Your file consists of data in the form of cells (1XM) and those cells are further consists of subcells (1XN).

You can read the Mth cell and Nth sub-cell using below code

load polygon.mat
polygon{1,M}{1,N}