simulink double value into a logical type error

if true
  function y = ratioimg(u)
[L2,num2]=bwlabel(u,8); %連通區域標記
B2=false(size(u));
for i=1:num2
  [r,c] = find(L2==i);
  left  = min(c);
  right = max(c);
  up    = min(r);
  down  = max(r);
  d     = (down-up) / (right-left);
  if d > 0.7 & d < 1.42
      % [x,y]=find(L2==i);  % Done above already
      B2 = B2 + bwselect(u, c, r, 8); %%%把滿足長寬比在0.8到2的區域留下
  end
end
y = B2;
end
i use this function on the simulink but show the error

[Birdman]

Can you share your simulink model?

[KAI XUN CAI]

this

[Birdman]

Do you have to do the data type conversion inside a MATLAB Function block?

[KAI XUN CAI]

no just that code

[KAI XUN CAI]

so how to conversion?

[Birdman]

Which line the conversion will take place? Be more specific.

[KAI XUN CAI]

B2 = B2 + bwselect(u, c, r, 8); change double

Answer 1

[Fangjun Jiang]

B2 is logical. 
B2 = B2 + bwselect(u, c, r, 8)
should be
B2 = or(B2,bwselect(u, c, r, 8))