You could put a resampling block in front of the QT GUI source or add on to the message handling to support setting the X and Y axis limits. I think that would be a useful addition, the Y axis limits already have callbacks exposed to GRC but not via messages.
Regards, Derek On Tue, Jul 31, 2018 at 10:56 AM, Müller, Marcus (CEL) <[email protected]> wrote: > Hi Jason, > just to be sure to understand what you need: > Do you mean "zoom in x-axis"? > (because technically, the bandwidth of that display is always Nyquist, > i.e. defined by the sampling rate) > > Best regards, > Marcus > > On Mon, 2018-07-30 at 16:57 -0400, Jason Hein wrote: > > I have a GNU radio flow graph with a custom data source and I'd like to > be able to change the bandwidth displayed on the QT GUI Frequency Sink > block dynamically. Is there a way to do this programmatically? The QT GUI > Frequency Sink block has a message port for programmatic changes to > frequency, but I don't see an equivalent means for changing bandwidth. Is > there a way for an OOT block to get a reference to another block to call a > public member function? > > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > >
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