function D = clabel2(C, v)
  h = nan(1,size(C,2));
  
  i = 1;
  while i <= size(C,2)
    h_ = C(1,i);
    cnt_ = C(2,i);
    h(i+1:i+cnt_) = h_;
    i = i+cnt_+1;
  end
  
  for i=1:numel(v)
    ii_ = find(h == v(i));
    if numel(ii_) == 0
      continue;
    end
    i_ = round(rand() * (numel(ii_)-1)) + 1;
    x = C(1, ii_(i_));
    y = C(2, ii_(i_));
    s = sprintf('%d', v(i));
    hold on;
    text(x,y,s);
  end
end