Le samedi 25 juillet 2015 à 06:55 -0700, Joe Tusek a écrit :
> Hi, I am trying to convert some Matlab code where structured data
> variables were used that were composed of complex and real data which
> is passed to a function. The original Matlab call was [poles, L2] =
> PSO("FLBF",lb,ub,poles,data) and data is of the form data.Y and
> data.w, where Y is a complex number and w the frequency.
>
> In Julia I have defined the following structure
>
> type Data_array
> Y::Float64
> w::Float64
> end
>
> but am not clear on how to get Y to be a complex Float64? I tried
> Complex(Float64), and Array(Float64,1041) versions as well as
> combinations of im but these were all rejected.
>
> If I comment out the non compliant lines of code so it will run, I
> see that Y is of size (1041,1) and w is of size (1, 1041). Trying to
> form the data variable using
> data = Data_array(Y, w)
> suffers a conversion error.
>
> Can someone advise on how to make the needed structured variable?
Complex(Float64) tries to build a complex holding the *value* Float64,
which doesn't make sense. To specify a type parameter, use
Complex{Float64}. There's also the alias Complex128, if you prefer.
Regards
