A for loop that allows me to increase by 2 terms of a vector

Hello everyone!

someone could help me to find a loop for that allows me, for a vector of n terms, to perform the following action "coord1 = XY(Edge(i,1),:);" on the first term and the same action on the term n+2?

at the moment I can only increase by one term with the following code.

Thank you!

XY = [0 0;	 
    5  0;	 
    5  -5];	
Edge = [1 2; 
        2 3]; 
EdgeL = [ 5;
        5];
for i = 1 : size(XY,1)
    coord1 = XY(Edge(i,1),:);
    coord3 = XY(Edge(i,2),:);
end

[KALYAN ACHARJYA]

Here the inputs,

XY = [0  0;	 
      5  0;	 
      5  -5];	
Edge = [1 2; 
       2 3]; 

Now what would be the desired output/logic?

Answer 1

[Vashist Hegde]

you can use the for loop this way -

for i = 1 :2: size(XY,1)
    coord1 = XY(Edge(i,1),:);
    coord3 = XY(Edge(i,2),:);
end

This will run the loop on alternate terms.