Matlab matrix - delete elements

[stepan89]

Hello everyone,

Can someone help me please with this code?
I have vectors (coordinates) x = [1 1 2 3 5 6 1 1 5] and y = [2 3 6 8 4 1 1 1 5]
If I plot them, everything's ok, it works...

plot(x, y, 'bo') for example...

Now I would like to delete some elemets, to be accurate: If the x OR y is less than or equal to 2 I would like to delete this elemet and plot without these coordinates ... I hope you do understand

x = [1 1 2 3 5 6 1 1 5];
y = [2 3 6 8 4 1 1 1 5];
numberOfElements = numel(x);

for i=1:1:numberOfElements
     if (x(i) > 3) || (y(i) > 3)
        x(i) = [];
        y(i) = [];
      end;
end;
plot(x,y,'bo');

That is my idea, but it doesn't work.

Please help if you can,
Thank you,

stepan89

 

[albbg]

I think you can simply generate two new vectors that include all the element having x AND y greater than 2:
-------------------------------------
x = [1 1 2 3 5 6 1 1 1];
y = [2 3 6 8 4 1 1 1 1];
h = [];
k = [];
numberOfElements = length(x);

for i=1:1:numberOfElements,
if (x(i) > 2) & (y(i) >2)
h = [h x(i)];
k = [k y(i)];
end
end
plot(h,k,'bo');
-------------------------------------

Regards

 

[stepan89]

Thank you very much,

problem solved