dispay error in command window

I have a variable which contains complex values (FFT result). As you can see in the above figure, the second imaginary value in this variable is negative. When i load the second value to a variable 'aa' as a transpose, it retains the negative component. But when i load as it is, to the variable 'bb', it doesnt show as a negative component. Why is that ? this is perplexing.

Answer 1

[Walter Roberson]

The ' operator is not the transpose operator: it is the conjugate transpose operator. The transpose operator is .'

[Merida]

Ahh. In which case, if I use

(signIm(freqdata1(1,2)))

why is the resultant value not a -1 ? . Any ideas ?

[Walter Roberson]

I do not appear to find any function named signlm?

[Merida]

Ahh. never mind. i had taken the complex tranpose earlier of freqdata as it is. My mistake. Thank you for your help.