Plotting a 3D surface

Hello everyone, I am trying to plot a 3D surface and colouring it according to the values of a 4th variable (vector). This vector contains the values of the 4th variable for each node of the surface. For instance:

% Surface definition (9 elements, 16 *nodes*)
x = linspace(0,1,3);
y = linspace(0,1,3)';
[X,Y] = meshgrid(x,y);  
Z = (X.^3) - 3*X.*(Y.^2); 

% 4th dimension (temperature for each node)
T = [0, 0, 0, 0, 0, 10, 10, 10, 0, 10, 20, 20, 0, 10, 20, 30];

Other possibility would be treating the nodes as voxels and plot each voxel with its corresponding temperature color, but I have not found a way to do it either.

Thank you so much. M.

Answer 1

[Yuvaraj Venkataswamy]

Try this,

 if true
    x = linspace(0,1,3);
    y = linspace(0,1,3)';
    [X,Y] = meshgrid(x,y);  
    Z = (X.^3) - 3*X.*(Y.^2);
    T = [0, 0, 0, 0, 0, 10, 10, 10, 0, 10, 20, 20, 0, 10, 20, 30];
    surf(X,Y,Z,T)
    colorbar
  end

[Maria de Arizaga Barrachina]

Thanks Yuvaraj! I already solved the problem. The answer is close to that, but the 4th variable has to written so its dimensions match the other variables, that would be:

   T = [0, 0, 0, 0;...
       0 10, 10, 10;...
       0, 10, 20, 20;...
       0, 10, 20, 30];

[Yuvaraj Venkataswamy]

Welcome