So you mean this one:
http://gnuradio.org/redmine/projects/gnuradio/wiki/TutorialsWritePythonApplications#Multiple-flow-graphs


That refers to the Push-to-talk example from gr-uhd, which is a bit
older, I think.
However, the whole point is that you can simply write your TX flow graph
and your RX flow graph as hierarchical blocks of their own, for example
graphically using GRC, or like in that Tutorial in python. Then you just
use these hier_block2 's in your "overall flow graph".

The graphical sinks must be placed at the point where the samples flow
that you want to visualize, hence I don't understand that part of the
question; I do think you're on to something, so could you please elaborate?

Best regards,
Marcus

On 04/27/2015 05:07 PM, Nemanja Savic wrote:
> The one suggested for multiple flowgraphs in the gnuradio page Writing
> python applications. Walkie talkie nbfm example (can't provide the
> name at the moment).
>
> Best,
> Nemanja
>
> On Mon, Apr 27, 2015 at 2:23 PM, Marcus Müller
> <marcus.muel...@ettus.com <mailto:marcus.muel...@ettus.com>> wrote:
>
>     Hi Nemanja
>
>     On 04/27/2015 01:18 PM, Nemanja Savic wrote:
>     > Hi all guys,
>     and girls :)
>     >
>     > I am building a gnuradio top block application where I want to
>     have rx
>     > and tx flographs. Something similar to the example provided with
>     gnuradio.
>     Which one of the dozens of examples?
>
>     Greetings,
>     Marcus
>
>     _______________________________________________
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>
>
>
>
> -- 
> Nemanja Savić

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