Index exceeds the number of array elements (1264).

I have been trying to work on a function however it continues to get stuck on this section. I have made sure that the matrix/vector isn't starting on zero, but I dont understand why I continue to get this error.

i=1;
for f=1:length(x)
    s(i)=x(i)+x(i+1);
    i=i+1;
end

Answer 1

[Geoff Hayes]

Karlie - f iterates from 1 to the length of your x array. This is fine except for

s(i)=x(i)+x(i+1);

because when i (and you could use f here) is the length of your array, then i+1 is one larger than the length and so x(i+1) is invalid giving you the above error message. Instead, try something like

for k=1:length(x)-1
    s(k)=x(k)+x(k+1);
end

where we limit k to the interval [1, N-1] where N is the length your x array.

[Karlie Brillant]

This worked perfectly!

Answer 2

[madhan ravi]

s=zeros(size(x)); % pre-allocate
for i = 1:numel(x) % assuming x a vector
% remove i=i+1