Nope, same problem under Ubuntu 16.04LTS
On 10.07.2016 16:20, Marcus Müller wrote: > Hi Ellie, > > you'd have to recompile GNU Radio to use a different version of QWT – I > don't know how you've installed your current version, so this might be > more or less complicated. > > I'll try to build a quick Ubuntu 16.04 container with GNU Radio from the > Ubuntu package sources to see whether things work better there (because > in that case, upgrading from 15.10 to 16.04 is what I'd recommend – > especially since 16.04 is a LTS release) > > > Best regards, > Marcus > > On 10.07.2016 14:54, Ellie White wrote: >> Hi Marcus, >> >> Thanks very much for the advice! I tried what you suggested ("stop", >> "start", "autoscale", etc) but the time raster is stubbornly refusing to >> work. I am beginning to think, like you said, that it may have something to >> do with the QWT version installed. So I am trying to upgrade to version 6 >> but I am getting confused because once I installed version 6.1.4 of QWT it >> saved to my 'Home' folder so GNU Radio is still detecting version 5. Do you >> have any tips on how I could get it to use QWT 6? (I tried searching the web >> for instructions/hints but have yet to turn up anything useful!) Thank you >> so much! >> >> -Ellie >> >> -----Original Message----- >> From: Marcus Müller [mailto:marcus.muel...@ettus.com] >> Sent: Saturday, July 9, 2016 9:21 AM >> To: discuss-gnuradio@gnu.org; orionnebul...@outlook.com >> Subject: Re: [Discuss-gnuradio] Time Raster- Linux >> >> Hi Ellie, >> >> not a silly question at all! And, first of all: Welcome to the GNU Radio >> community! >> >> With 32kS/s, it's taking quite some time to build up something visible, >> "pushing" out the solid yellow, but for me, this works (see screenshot >> attached). >> >> So, this actually does sound like a bug, but I can't really put my finger on >> where things might go wrong. A couple of ideas to try, sorted by >> desperation: >> >> * middle mouse button on time raster canvas, "stop", middle mouse, "start" >> * middle mouse button -> autoscale >> * mmb -> save image (& inspect image) >> >> If none of that helps, my best guess is that this might have something to do >> with the QWT version used – but as I've never saw that problem "in the >> wild", that would surprise me a bit. Then again, the Time Raster Sink is not >> the most popular (yet, one of the most helpful, I think) signal >> visualization sink – so maybe this simply never came up. >> >> Actually, the warning that the visualization window nearly hides reads: >> >> std::cerr << "Warning: QWT5 has been found which has serious performance >> issues with raster plots." >> >> and so, maybe the performance issue is so severe that you simply see >> nothing. >> >> Best regards, >> Marcus >> >> On 07.07.2016 03:26, Ellie White wrote: >>> Hello! >>> >>> >>> >>> I am a new GNU Radio user and I have a question about the QT GUI Time >>> Raster sink in GNU Radio version 3.7.8. I built a flowgraph (which is >>> attached as a .grc file) with a source connected to both a QT GUI Time >>> Sink and Time Raster. While the Time Sink displays the signal >>> properly, the Time Raster is blank and shows no signal, as shown in >>> the screen shot I included. I have tried to use the Time Raster tool >>> on Ubuntu - version 15.10 (it is a virtual machine running in >>> Windows), and cannot figure out why the time raster doesn’t appear to >>> display a signal. Am I doing something wrong, or is this a known >>> issue? Thanks very much for your time and apologies if this is a >>> silly question. >>> >>> >>> >>> -Ellie >>> >>> >>> >>> _______________________________________________ >>> Discuss-gnuradio mailing list >>> Discuss-gnuradio@gnu.org >>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> _______________________________________________ >> Discuss-gnuradio mailing list >> Discuss-gnuradio@gnu.org >> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio