how to skip and not add to matrix

When performing an intersect function there will be times where the value of D=[] since it doesn't exist in date2. In this case I would like to skip adding the values into the array. I tried this way, but it seems to not want to skip to the next increment value and still add to the array. How can I make it skip if D=[].

for i=1:49
      [D,ia,ib]=intersect(date1(i),date2)
      if D==[]
          p=1
      else    
      E(end+1,:)=[D,CUAB(i),CUSB(ib)]
      end 
  end

Answer 1

[Geoff Hayes]

liu - use isempty instead of trying to compare D to the square brackets

 if ~isempty(D)
    E(end+1,:)=[D,CUAB(i),CUSB(ib)];
 end

Note that if you try to evaluate

 D == []

then the answer is

 ans =
    []

Since this is not the true logical, then your code will always evaluate the else body of your if/else code.