Re: [Discuss-gnuradio] Dynamically changing bandwidth of QT GUI Frequency Sink

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?