if statements help, not compare

hello ı have this recognition but ı cant compare. Rn Gn Bn is Rn=R/R+G+B etc. I've put RnGnBn matrices in addition

if G>R

if R<0.8167

disp('orange class');

end

else

disp (' apple class');

end

code does not fall to the first if

Answer 1

[Walter Roberson]

You do not have an else corresponding to the if on line 2. The else that you have on the 5th line of your code corresponds to the else in line 6 of the algorithm.

You want

if this
  if that
      %this and that
  else
      %this but not that
  end
else
    %not this
end

but what you have is equivalent to

if this
  if that
      %this and that
  end
  %case of this but ~that was not tested
else
    %not this
end