3D Graph in MATLAB

Question

I want to draw a graph in MATLAB like this:

I have this dataset:

I tried to use this code:

s = [0  25  50  75  100]; 
t = [0; 25; 50; 75; 100]; 
[ss, tt] = meshgrid(s,t); 
u = [198 237 280 324 370; 
     237 270 310 354 399;
     280 310 348 390 434; 
     324 354 390 431 474; 
     370 399 434 474 516]; 

figure 
surf(ss,tt,u); 
rotate3d on 
xlabel('S[%]'); 
ylabel('T[%]'); 
zlabel('Umed[V]');

but I got this:

What is wrong?

Answer 1

As Phil says, your plot shows more points than the table you are showing. For instance, your table lists 5 points in the 'x' direction, but your plot looks like it has perhaps 100. So your code should produce the desired result once you use the "full" dataset.