Connecting Dots in a plot

Hello everyone!

I have 1 Vector (8x1 dimension) and 1 Array (3x1x8 dimension) and I want to connect each number of the vector with first element of each vector that belong to the array (this would mean 1x1x8)

My script works but I am struggling to connect the each point with a line, Can you help me ?

Here is my extract of code:

for i = 1:Nplies
    zbar(i,1) =  -(h + t)/2 + i*t;
    theta = thetadb(i) * pi / 180;% ply i angle in radians, from bottom
    theta_global(i,1) = thetadb(i);
    c = cos(theta);
    
    s = sin(theta);
    
    T = [ c^2 s^2 -2*c*s; s^2 c^2 2*c*s; c*s -c*s (c^2 - s^2)];
    
    T_inv = [c^2 s^2 c*s; s^2 c^2 -c*s; -2*c*s 2*c*s (c^2 - s^2)];
    
    
    Qbar = T * Q * T_inv; %transformed reduced stiffness matrix
 

    NT(:,:,i) = NTi + Qbar * abar * t * deltaT;
    
    
    NT_plot(:,:,i) = NTi + Qbar * abar * t * deltaT;
    
    
  
    
    figure(2)
    plot (NT_plot(1,:,i),zbar(i,1),'dr')
    xlabel('Loads in X')
    ylabel ('Laminate Global Thickness [mm]')
    legend ('NT across the Laminate')
    hold on 
    grid on
    line(NT_plot(1,:,i),zbar(i,1))
end

[Arthur Roué]

You are ploting your results in the for loop. Doing that, each new plot is a line, but with a single point.

I reccomand you to realise your plot after the loop. Then you can change line properties this way :

plot (NT_plot(1,:,:), zbar(:,1), 'LineStyle', '-')

or

h = plot (NT_plot(1,:,:), zbar(:,1), '-');
h.LineStyle = '-';

[Marcelo Boldt]

Thanks for your help, unfortunately is now telling me this:

Error using plot

Data cannot have more than 2 dimensions.

Error in MT_Global_laminate_analysis1 (line 117)

plot (NT_plot(1,:,:),zbar(:,1), 'LineStyle', '-.')

[Arthur Roué]

Yeah, matrix NT_plot has 3 dimension and plot function is for 2-D line plot.

I don't really understand your context, and I dont have your data. Try to plot in a loop, something like :

for dim = 1:size(NT_plot,3)
    plot (NT_plot(1,:,dim), zbar(:,1), 'LineStyle', '-', 'DisplayName', num2str(dim))
end

or a 3D plot with : plot3, mesh, ...

[Marcelo Boldt]

I could make it work! Thanks for your help, was very useful