On Wed, Aug 14, 2013 at 6:29 AM, Volker Schroer <dl1...@gmx.de> wrote: > Hi, > > what is the meaning of the variable "Center Frequency" in the qt_gui_sink / > qt_waterfall_sink ? > > If I remember well, in pre 3.7 version it served as base of the x - axis > legend. > > Now, if I choose a value > bandwidth/2 the spectrum will not be displayed. > > Do I misinterpret the meaning of "Center Frequency" or is this a bug ? > > -- Volker
Volker, This sounds like a bug. Someone else reported some related issues with this sink in 3.7, too. Probably a versioning issue that I didn't properly take care of with the update. Now, the main reason this would have slipped through is because I'm trying to get rid of the qt_gui_sink. Since I've split out the different sinks, it doesn't make sense to keep them in two different places with duplicated code that can't easily be shared (which can then lead to mistakes like this). I will be moving to a new structure for the qtgui_sink_X blocks that is just a tab container for the other individual classes to simplify the code. Now, you're also saying that it's a problem with the qt_waterfall_sink? That's more surprising, but again, probably a Qt/Qwt version issue and should be a simple fix once identified. Not sure when I'll be able to get to it, so either submit a patch or at least open a bug report on our Issues Tracker to make sure I remember to get to it soon. But remember, setting the center frequency is just a display issue. It simply sets the tick labels on the x-axis and nothing more. -- Tom Visit us at GRCon13 Oct. 1 - 4 http://www.trondeau.com/grcon13 _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
