Re: [Discuss-gnuradio] Architecture of *_rx_cfile.py output vector

[Marcus D. Leech]

On 29-11-2011 11:12 AM, Sebastian Döring wrote:
> On Mon, 28 Nov 2011 10:32:28 -0500
>  "Marcus D. Leech" <address@hidden> wrote:
> > On 28-11-2011 10:21 AM, Sebastian Döring wrote:
> > > Hello List,
> > >
> > > just wanted to know exactly how the output vector of ..._rx_cfile.py 
> > > is structured.
> > > Is the first element of the complex vector v[0] the one at the 
> > > desired frequency sprecified by "-f FREQ"?
> > >
> > > Thanks
> > >
> > > Sebastian
> > >
> > > '
> > It's just raw complex-float samples in native-binary format.
> >
> > The first item is I the second is Q then I then Q, etc.
> >
> > They're time-series samples, not FFT outputs.
> Uh ok -  explains a lot...
> Since the data is getting recorded as 32-bit complex float, is 
> "read_complex_binary()" the right octave method to put it into a 
> vector I can use for further processing?
> I found a gnuradio page that says "read_short_binary()" is supposed to 
> be the right method, but the output vector does not make any sense to 
> me...
>
> Regards
> Sebastian
Yup, read_complex_binary() is the one, as far as I can tell.  I'm not a 
MatLab/Octave user, but it seems like that reads complex-floats.