Cyclic reading in a vector

Hi, I'm a beginner and I have tried to find the solution on internet with no results

Starting from a vector=[1;2;...;x] and a for loop n=1:x,

for each loop i want to read the elements in the vector in position "n-1", "n", "n+1" at same time.

The problem is for n=1 i need to read the values in position "x" "1" "2" and for n=x i need to read the values in position "x-1" "x" "1". Now i'm working in the for loop using 3 "if" to manage the operations the 3 cases (n=1, n=x, n=all the rest), or creating a new vector =[x;1;2 ...;x;1]

Is there a better solution? Thanks

Answer 1

[Adam]

vector = [vector(end); vector; vector(1)];

for n = 2:x+1
   ...
end

would work.

[Manuel Bartoli]

The loop should be n=2:x-1

By the way I was thinking at something more...

for example

vector=[1;2;...;10]
for n=1:15
...n = 15 read index n and give me 5
...n =  1 read index n-3 and give me 8

I'm thinking for a general solution Thanks

[Adam]

The loop runs to x+1 because the vector is now 2 elements bigger than it was - i.e. a size of x+2.