MATLAB: How to vectorize this code to eliminate nested For loops

for loopvectorization

Would like to know how this code be vectorized:
for y=1:rows
  for x=1:cols
      nEnergy(y,x) = (Energy(y,x) - min(Energy)) / (max(Energy) - min(Energy));
  end
end
for y=1:rows
  for x=1:cols
      weight(y,x) = dot(nEnergy(y,x), delta(y,x));
  end
end
nEnergy, weight, delta is an array.

Best Answer

Assuming that the first set of loops is supposed to normalize the data:
nEnergy = (Energy-min(Energy(:))) / (max(Energy(:))-min(Energy(:)));
w1 = delta.*nEnergy
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