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

2009-04-20 Thread Josh Blum
Ahh, no vector sink. The vector sink will queue up samples forever, and although you can clear the buffer, you will not stay vector aligned with the fft size. Vector sink is good for the QA code with a finite number of samples in and out, but i would definitely not recommend it for dealing wit

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

2009-04-20 Thread Firas Abbas
Hi, > On Mon, 4/20/09, 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, This is not true (see: usrp_spectrum_sense.py). > complex baseband samples from usrp --> stream to vector > (v

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

2009-04-20 Thread 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 -Jos

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

2009-04-19 Thread Martin Braun
On Sun, Apr 19, 2009 at 08:04:13PM -0700, Saleem Akhtar wrote: > Hi, > > I am trying to implement a periodogram in gnu radio. > http://img25.imageshack.us/img25/1606/powerdetectorgrc.png If it's any help, all periodogram-based spectral analysis methods are part of https://www.cgran.org/wiki/SpecE

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

2009-04-19 Thread Saleem Akhtar
Is their no choice other than file sink? Thanks   --- On Mon, 4/20/09, Josh Blum wrote: From: Josh Blum Subject: Re: [Discuss-gnuradio] GRC:Suitable Sink required To: "Saleem Akhtar" Cc: discuss-gnuradio@gnu.org Date: Monday, April 20, 2009, 4:37 AM You can use a file sink to

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

2009-04-19 Thread Saleem Akhtar
Thanks! I will look into it. --- On Mon, 4/20/09, Josh Blum wrote: From: Josh Blum Subject: Re: [Discuss-gnuradio] GRC:Suitable Sink required To: "Saleem Akhtar" Cc: discuss-gnuradio@gnu.org Date: Monday, April 20, 2009, 4:37 AM You can use a file sink to write the samples out

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

2009-04-19 Thread Josh Blum
ubject: Re: [Discuss-gnuradio] GRC:Suitable Sink required To: "Saleem Akhtar" Cc: discuss-gnuradio@gnu.org Date: Monday, April 20, 2009, 3:55 AM You should probably start by looking at the existing wx gui sinks, copy and modify one: http://gnuradio.org/trac/browser/gnuradio/trunk/gr-wxgui/sr

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

2009-04-19 Thread Saleem Akhtar
Thanks, but i dont want to use GUI sink. I want to get an array of samples which represent the periodogram. So that i can do further processing on them. Regards From: Josh Blum Subject: Re: [Discuss-gnuradio] GRC:Suitable Sink required To: "Saleem Akhtar" Cc: discuss-gnuradio@gn

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

2009-04-19 Thread Josh Blum
You should probably start by looking at the existing wx gui sinks, copy and modify one: http://gnuradio.org/trac/browser/gnuradio/trunk/gr-wxgui/src/python The vector sink is not what you want here. -Josh Saleem Akhtar wrote: Hi, I am trying to implement a periodogram in gnu radio. http://i

[Discuss-gnuradio] GRC:Suitable Sink required

2009-04-19 Thread Saleem Akhtar
Hi, I am trying to implement a periodogram in gnu radio. http://img25.imageshack.us/img25/1606/powerdetectorgrc.png Currently, I am stuck in deciding what sink i should use and how. I want the output in the the form of an array so that I can have calculations on the periodogram samples. As the i