Tom,

Thanks for the info. I could see a reimplementation as a good project for some 
CS undergrads here at GT. Is there a particular way the QT time raster should 
be rewritten (e.g. using particular libraries, QT versions, etc) to be OS X 
compatible and align with the future direction of QT plots in GR?  Or is the 
issue more complicated than just a port/reimplementation? I personally find the 
raster extremely useful for analysis. 

PWG
> On Nov 25, 2015, at 9:16 AM, Tom Rondeau <[email protected]> wrote:
> 
> On Wed, Nov 25, 2015 at 10:08 AM, Paul Garver <[email protected] 
> <mailto:[email protected]>> wrote:
> The QT Time Raster GUI doesn’t appear to function in the latest 
> gnuradio-devel macports. The plot appears all a single color although the 
> bits into the graph are not constant. I run the same flow graph on my Ubuntu 
> setup and I get the rastered bits plotted as expected. I’m using:
> 
>  gnuradio-devel 
> @20151111_0+docs+grc+jack+portaudio+qtgui+sdl+swig+uhd+wavelet+wxgui
> OSX 10.10.4
> 
> Simple example: Raster some bits with the gr_time_raster_b
>  gr_time_raster_b bits.b8
> 
> Output:
> Using Volk machine: avx_64_mmx_orc
> Warning: QWT5 has been found which has serious performance issues with raster 
> plots.
>          Consider updating to QWT version 6 to use the time raster GUIs.
> 
> The problem with this warning is that it appears it is nontrivial to use QWT6 
> with OSX on the current gnuradio builds.
> 
> Does anyone else have this problem? Does it work in the gnuradio (non-devel) 
> port?
> 
> PWG
> 
> Paul,
> 
> Yes, we understand the problem with OS X and QWT5 here. The main problem is 
> the PyQWT issue, which we've gotten out of the way for the most part, but 
> there are still some problems that Dickens has faced with moving away 
> completely. The thought was to give up the raster in favor of the other 
> things it enables. 
> 
> It's also quite possible that the QWT5 problem with the raster plotting is 
> simply due to bad coding on my part.
> 
> Tom
>  

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