Re: [Discuss-gnuradio] matplotlib runtime error

[Tom Rondeau]

On Thu, May 8, 2014 at 3:30 AM, Activecat <address@hidden> wrote:

On Fri, May 2, 2014 at 8:56 PM, Tom Rondeau <address@hidden> wrote:

On Fri, May 2, 2014 at 8:49 AM, Marcus Müller <address@hidden> wrote:

Hi Activecat,

typical GUI problem; background is that X applications are inherently hard to multithread, which basically requires graphical toolkits to run in a main loop. This conflicts with every block being run in its own thread.

The easiest solution nowadays should be that you generate a QT flow graph in GRC, use PyQT to generate your GUI, register a message handler and integrate matplotlib (there are examples out there, just don't have one at my fingertips right now), and use the message passing interface to get data out of your flow graph into your GUI.

Greetings,

Marcus

Tim's written a number of blocks like this:

https://github.com/osh/gr-pyqt

Tom

I am now learning Qt in order to use it with gnuradio.

Q1: In gnuradio we use Qt Widgets, but not Qt Quick at all. Is this correct?

Correct.

 

Q2: In roadmap when will gnuradio start to use Qt5, gnuradio v3.8 ..?

Uncertain. I haven't spent enough time, yet, with QT5 to know for sure and determine what we get (features) and what we lose (older distro support). More likely, this will be a 3.9 thing.

Tom