increment two values in a single for loop

I was just wondering if there was a way to increment two variables simultaneously in a single for loop?

for example i want to increment

i = 1:1:n-times

but at the same time

j=1:1:m-times

in a single for loop

Answer 1

[Star Strider]

This works:

times = 2;
m = 10;
n = 15;
j = 0
for i = 1:1:n-times
    if j < m-times
        j = j + 1;
    end
    % ... etc...
end
i       % Display results
j

[Image Analyst]

or, without the if:

j = min(i, m-times);

Just an alternate way - I have no idea which is faster.

Answer 2

[Iain]

There is a cheeky way:

 for h = 1:110
  [i, j] = ind2sub([10,11],h)
 ...
 end

Answer 3

[sourav malla]

You can also do like this:-

for i=1:n,j=1:m
    %do something;
end

It will execute the stuff in (n*m) format.

[Steven Lord]

At each iteration of the one for loop in that code, the variable j will be assigned the vector 1:m.

If you have two arrays of data:

variable1 = magic(5);
variable2 = gallery('moler', 5);

you could iterate over both with one loop if you assume or check that they have the same number of elements.

for whichElement = 1:numel(variable1)
    V1 = variable1(whichElement);
    V2 = variable2(whichElement);
    
    % Do something with V1 and V2
    fprintf('Element %2d of each matrix is %2d, %2d.\n', ...
        whichElement, V1, V2);
end