How do I threshold only real part of a complex matrix?

For a complex matrix how do I threshold only the real part of its elements to zero if I have complex matrix A, A(real(A)>0.5)=0 will make the entire complex matrix elements with real part greater than 0.5 as zero but not specifically the real part. How to do that in a single line?

Answer 1

[Stephen23]

>> A = complex(randi([-3,3],4,4),randi([-3,3],4,4)) % fake data
A =
  -2 + 3i  -2 + 1i   2 - 3i  -2 + 1i
  -2 + 0i   3 + 0i  -3 + 3i   0 + 0i
   2 + 0i   2 - 2i   3 + 3i   0 - 3i
   1 - 2i  -3 - 2i   3 + 2i   0 - 2i
>> B = complex(real(A).*(real(A)<=0.5),imag(A)) % set real(A)>0.5 to 0.
B =
  -2 + 3i  -2 + 1i   0 - 3i  -2 + 1i
  -2 + 0i   0 + 0i  -3 + 3i   0 + 0i
   0 + 0i   0 - 2i   0 + 3i   0 - 3i
   0 - 2i  -3 - 2i   0 + 2i   0 - 2i