Error message on if functions with two arrays

Hi,

Using two if conditions, I'm trying to compare the subsequent values of an array and the second value of these with the same row of another vector. Somehow, it returns the error message, that the index exceeds the matrix. In excel, it's just a simple if function IF(AND(A1<>A2,A2=B2),1,0). Any idea where I'm running wrong? I kindly attached the matlab code, too:

wi1 = zeros (N,1);

for i=1:N if roi1(i+1)~= roi1(i) && roi1(i)== buobem(i) wi1 = 1; else wi1 = 0; end end

Any help would be very much appreciated, please. Thank you

Answer 1

[Star Strider]

Guessing here, because of the paucity of information.

Consider:

for i=1:N-1

instead.

[Tobias Barton]

exactly that, thank you very much indeed!

[Star Strider]

As always, my pleasure!

Answer 2

[Andrei Bobrov]

wi1 = zeros (N,1);

for ii=2:N
    if roi1(ii-1)~= roi1(ii) && roi1(ii)== buobem(ii)
        wi1(ii) = 1;
    else 
        wi1(ii) = 0;
    end
end

or

roi1 = roi1(:);
buobem = buobem(:);
wi1 = [0; diff(roi1)~=0 & roi1(2:end)== buobem(2:end)];