How can i skip iterations in for loop

I need my loop to skip iterations to a given index. When i try it the obvious way like below

for i=2:1:(dim(1)-2)
%(a lot of irrelevant if statements)
    %skip through points in the same hole
    while graph(j) < tor
        j=j+1;
    end

      if j < dim(1) - 2
        i=j; % <== here is the problem
    end
end

im getting a warning "LOOP index is changed inside of a FOR loop." and program ignores my iterator override.

How can i do this properly? or work around this?

Answer 1

[Matt Fig]

Why not just give up on the FOR loop and use a WHILE loop? That way you control when to increment the index the whole time! As you have found out, MATLAB won't let manipulate the loop by changing the index inside.

idx = 1;

while idx<5
  % Do stuff, check for idx condition, whatever..
  if condition
     idx = 1;  % Reset idx!  Or whatever....
  else
     idx = idx + 1;  % Increment idx
  end
end

[Thomas]

guess the simplest solution is the hardest to find. thanks a lot!

Answer 2

[Matt J]

Use the CONTINUE command

if i~=j
 continue;
end