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

[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, address@hidden wrote:
> 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, address@hidden 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 Vector Sink”. The vector sink won't
>>> display any data for the first two minutes, and then it is starting to
>>> show very old values. When I use the block “Vector to Stream” and a
>>> simple “QT GUI Time Sink” instead, the values are displayed immediately
>>> without delay.
>>>
>>> The block “music_cf” feeding the vector sink is a sync_decimator,
>>> generating one vector of 181 elements for every 1000 input samples. I've
>>> provided a shortened version of my c++ code in the attachment, without
>>> the actual mathematics.
>>>
>>> What could be the reason for this huge delay when using the “QT GUI
>>> Vector Sink”? Is it a buffering problem?
>>>
>>> Best regards,
>>> Simon
>>>
>>> Block Diagram:
>>> http://fs1.directupload.net/images/150903/7cnqbzup.png
>>>
>>>
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>>
>>
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