MATLAB: Apply some code on this array

cumulative sumMATLAB

Hi, I have an array
S=[ -2.8933   -2.3867  -11.5800  -17.3733    0   22.8400   32.9800   23.0533 6.4933    0.0000   27.2333   44.0333   30.2333    7.1333      0   40.2267   84.8867  138.0800  131.7400   -0.0000]
I need to apply these lines of code on every 5 values
    [Max,MaxIdx]=max(S)
    [Min,MinIdx]=min(S)
for n=1:5
  code(n)=0
    if n>=MinIdx & n<=MaxIdx || n<=MinIdx & n>=MaxIdx
      if MaxIdx > MinIdx
        code(n)=1
      else if MinIdx > MaxIdx
        code(n)=2
  
      end
    end
end
end
the result array code, should be 0 0 0 1 1 0 2 2 2 2 0 2 2 2 2 0 0 2 2 2

Best Answer

Looping through S and creating a temporary array every 5 values should do the trick.
for i=1:5:length(S)
    temp=S(i:i+4);
    [Max,MaxIdx]=max(temp);
    [Min,MinIdx]=min(temp);
      for n=1:5
      index=i+n-1;
    code(index)=0;
      if n>=MinIdx & n<=MaxIdx || n<=MinIdx & n>=MaxIdx
        if MaxIdx > MinIdx
          code(index)=1;
        else if MinIdx > MaxIdx
          code(index)=2;
    
        end
      end
          end
      end
  code
  end
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