Re: [Discuss-gnuradio] missing internal callbacks

[Robert McGwier]

It is a very difficult thing to implement practically and is so close to necessary limitation that you should just consider it necessary and move on.

Bob

On Thu, Jul 3, 2014 at 5:40 PM, <address@hidden> wrote:

Hello-

when creating a flowgraph in GRC there are times I would like to change the decimation on-the-fly with a gui slider.  However, this does not work because the decimation factor in blocks such as the AM Demod or Decimating Fir Filter does not have an internal callback (as I understand it).  My main purpose is to be able to dynamically change the sampling rate to re-scale the x-axis in a gui fft sink while the flowgraph is operating.  Is there a way around this?  Is this a necessary limitation, or just something nobody has gotten around to implementing?

Thanks!

Eric

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Bob McGwier
Co-Owner and Technical Director, Federated Wireless, LLC

Professor Virginia Tech

Senior Member IEEE, Facebook: N4HYBob, ARS: N4HY

Faculty Advisor Virginia Tech Amateur Radio Assn. (K4KDJ)