Re: [Discuss-gnuradio] GRC:Suitable Sink required

[Josh Blum]

If you want to extract samples from a gnuradio data stream and process 
them in python, you should make a hierarchical block with a message sink 
inside. The wxgui blocks are all great examples for this.

Try 
http://gnuradio.org/trac/browser/gnuradio/trunk/gr-wxgui/src/python/fftsink_gl.py

-Josh

Saleem Akhtar wrote:
> Hi,
> It appears that gr.message_sink and gr.msg_queues are for digital data. but my 
> flowgraph (periodogram) is for analog samples,
>
> complex baseband samples from usrp --> stream to vector (vectors of fft_size) 
> --> FFT
>  --> complex to mag squared  --> (sink or block to be determined)
>
> Is their no choice other than file sink?
>
> Thanks
>
>