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?
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