Re: [Discuss-gnuradio] Display Problem with QT GUI Vector Sink

2015-09-09 Thread Simon Biehl
Hi Marcus, thanks for your detailed reply. I built your test case, which shows the same huge delays of ~2 minutes. Surprisingly, changing the vector size to 1024 elements (=4096 bytes) yielded a much better result with delays going down to about 3 seconds. Nevertheless I think I'll stick to to

Re: [Discuss-gnuradio] Display Problem with QT GUI Vector Sink

2015-09-07 Thread Marcus Müller
Hi Simon, > Is it possible, that the way my music_cf function is outputting the data, might cause some trouble? 181 floats isn't really a "round" itemsize, and since GNU Radio can only build buffers that are multiple of 4KB (==4096B), I assume that you get a large buffer (probably 4096 items of s

Re: [Discuss-gnuradio] Display Problem with QT GUI Vector Sink

2015-09-07 Thread gnuradio
The example is running without errors. Is it possible, that the way my music_cf function is outputting the data, might cause some trouble? Simon Am 2015-09-04 21:45, schrieb Martin Braun: There's an example for the vector sink, which doesn't seem to have that issue. Can you confirm that? It's

Re: [Discuss-gnuradio] Display Problem with QT GUI Vector Sink

2015-09-04 Thread Martin Braun
There's an example for the vector sink, which doesn't seem to have that issue. Can you confirm that? It's in gr-qtgui/examples. M PS: I had to locally fix the example, maybe you need to do that to, the actual vector sink block was missing. On 04.09.2015 01:57, gnura...@simonbiehl.de wrote: > Hi

Re: [Discuss-gnuradio] Display Problem with QT GUI Vector Sink

2015-09-04 Thread gnuradio
Hi Martin, averaging is disabled. Any further ideas? Best regards, Simon Am 2015-09-03 18:49, schrieb Martin Braun: The vector sink has an averaging option, is that on? M On 03.09.2015 02:25, gnura...@simonbiehl.de wrote: Dear all, I built an angle-of-arrival system using four Ettus USRP2.

Re: [Discuss-gnuradio] Display Problem with QT GUI Vector Sink

2015-09-03 Thread Martin Braun
The vector sink has an averaging option, is that on? M On 03.09.2015 02:25, gnura...@simonbiehl.de wrote: > Dear all, > > I built an angle-of-arrival system using four Ettus USRP2. I'm facing a > problem when trying to display a vector containing the calculated > MUSIC-Spectrum using a “QT GUI Ve

[Discuss-gnuradio] Display Problem with QT GUI Vector Sink

2015-09-03 Thread gnuradio
Dear all, I built an angle-of-arrival system using four Ettus USRP2. I'm facing a problem when trying to display a vector containing the calculated MUSIC-Spectrum using a “QT GUI Vector Sink”. The vector sink won't display any data for the first two minutes, and then it is starting to show ve