3D-Surface from .dat-File

Hello, i have a test.dat File with a Variable Buff that has 3 columns. The Code for this looks like this:

Buff = zeros(numel(850:10:870)*numel(1286:10:1306),3);
Ctr = 1;
for EG = 1286:10:1306
      for PC=850:10:870
          Main
          Buff(Ctr, 1) = PC;
          Buff(Ctr, 2) = EG;
          Buff(Ctr, 3) = XXX;
          Ctr = Ctr+1;
      end
end
save test.dat Buff;

The Output looks like this:

Column1                      Column2                      Column3
(Iteration PC=850:10:870 )  (Iteration EG=1286:10:1306)   (XXX)
850                          1286                         ...
860                          1286                         ...
870                          1286                         ...
---                          ---                          ---  
850                          1296                         ...
860                          1296                         ...
870                          1296                         ...
---                          ---                          ---
850                          1306                         ...
860                          1306                         ...
870                          1306                         ...

Now i want make a 3D-plot Surface of this data/values. How i can load the values of the columns from test.dat into a plot and the next question is: Must i use the command meshgrid or is this possible with interpolation between the serveral points.

Thank you!

Answer 1

[ebot joel]

M=dlmread('test.dat')

plot3(M(:,1.),M(:,2),M(:,3))