How to use Real(); Complex(); functions to define a complex number in Matlab?

Question

I am from the simple numbers world of audio and i am finding complex number errors in Matlab coder compilation:

The left-hand side has been constrained to be non-complex, but the right-hand side is complex. To correct this problem, make the right-hand side real using the function REAL, or change the initial assignment to the left-hand side variable to be a complex value using the COMPLEX function.

How do i use real function in this scenario?

tfr= zeros (N,tcol) ;  
for icol=1:tcol,
tfr(1,icol)= sum(g2 .* x(ti-points,1) .* conj(x(ti-points,xcol))); % error here

Answer 1

change the initial assignment to the left-hand side variable to be a complex value using the COMPLEX function.

Thus is exactly what you have to do.

tfr= complex(zeros (N,tcol) ) ;  

You must tell the coder to allocate a variable with sufficient space for a complex variable.

Answer 2

This has taken care of it for the moment:

changing initial array statement:

carr= zeros (N,tcol) ;  
tfr = complex(carr,0);

there are probably better answers.