for loop for different set of values

Hi, i want to run for loop with different set of values as for example

for i = 2:6,17:22
Y= 2*i;
End

Please do it ASAP

[Walter Roberson]

http://www.mathworks.com/matlabcentral/answers/29922-why-your-question-is-not-urgent-or-an-emergency

Answer 1

[Tim]

A more polite way to ask in the event of urgency would be something like:

"I really need help on this one, time is a factor!"

a =[2:6 17:22]
for i=1:length(a)
    y=2*a(i)
end

Or if you want to do it without a loop use vector form, which is generally more efficient in MATLAB:

a =[2:6 17:22];
y=2.*a;

Answer 2

[Azzi Abdelmalek]

It's better to avoid the variable i, because it's used by Matlab with complex numbers.

for ii= [2:6,17:22]
    Y= 2*ii;
end

Answer 3

[Walter Roberson]

for i = [2:6,17:22]
  Y = 2*i;
end

Note that you are overwriting Y completely each time, which is a common error in for loops. When you are looping over values that are not consecutive integers and you want to get one output value for each input value then use something like

ivals = [2:6,17:22];
for k = 1 : length(ivals);
  i = ivals(k);
  Y(k) = 2 * i;
end

[Amir Mohammad Babaie Parsa]

Hi

It really helped me, Thanks a zillion.

[Rafiqul Islam]

Walter Roberson Thanks a lot