?? Error using ==> plot3 String argument is an unknown option.

MON = [2.8 3.6 17.2;
      5.4 8.3 15.8;
      2.5 3.2 17.6;
      9.9 10.7 13.6;
      5.5 8.9 15.5;
      9.7 11 13.9;
      2.3 3.9 17.9;
      5.7 8.1 15.1;
      9.4 10.5 13;
      9.9 13.2 13.7];

    [m,n]=size(MON)

    for j=1:n

    plot3(MON(:,j),'X')
    end

Error in ==> Untitled2 at 19 a=plot3(MON(:,j),'X')

string argument is an unknown option.

Answer 1

[Azzi Abdelmalek]

To use plot3, you need three vectors x,y and z. You don't need a for loop

plot3(MON(:,1),MON(:,2),MON(:,3),'x')

[Tomas]

I know,but when i have matrix[450x452]?

THAKS

[Azzi Abdelmalek]

Ok, then tell us what you want to plot

[Azzi Abdelmalek]

What are your x,y and z coordinate?

[Tomas]

i want to plot change points, i make cluster analysis and i have to plot a for loop.

[Tomas]

i have for example 10 objects and each object have[x,y,z] coordinate,

[Azzi Abdelmalek]

How those [x,y,z] coordinate are stored?

[Tomas]

MON = [2.8 3.6 17.2;
    5.4 8.3 15.8;
    2,5 3,2 17,6;
    9.9 10.7 13.6;
    5.5 8.9 15.5;
    9,7 11 13,9;
    2,3 3,9 17,9;
    5.7 8.1 15.1;
    9.4 10.5 13;
    9,9 13,2 13,7];

this is coordinates

i want to plot this 10 object for loop.

[Azzi Abdelmalek]

You don't need a for loop, I've already answered:

plot3(MON(:,1),MON(:,2),MON(:,3),'x')

If you insist for the for loop

figure;
hold on
for k=1:size(MON,1)
      plot3(MON(k,1),MON(k,2),MON(k,3),'x')
end
hold off

[Tomas]

YEAH , THANKS YOU I already knew plot3 must have 3 input parameters