If the sequence has complex-valued elements, the transpose operator takes the conjugate of the sequence elements. To transform a complex-valued row vector into a column vector without taking conjugates, use the .' or non-conjugate transpose:
x = [1-i 3+i 2+3i 4-2i]; % 1-by-4 vector
x = x.'; % 4-by-1 vector
两种不同的转置方式，直接转会取共轭，加‘.’之后只是单纯转置，不取共轭。