Re: [Discuss-gnuradio] Vector Source_Sink and Flow Control

[Josh Blum]

It looks like what you want to do is outside of the scope of GRC. You 
will need to create custom blocks to provide that functionality, or make 
hand-written python code with wxpython.

-Josh

On 04/28/2010 05:44 AM, Umair Naeem wrote:
> I need to ask two questions...
>
> 1) What is the purpose of vector sink and/or vector source in GRC. If i convert 
> a stream from USRP2 into a vector and connect the result to a vector sink, what 
> information i can have and how do i acess that vector (ploting or writing to a 
> file etc)..

The vector sink actually has no purpose in grc. The idea of the vector 
sink was to have an easy way to get a small vector of data out of a 
block and into python to make QA code. It doesnt make every much sense 
to have in a block diagram; its just there for completeness.

> 2) I need to invoke/run certain type of file from GRC (like .cpp). If i have a 
> working flow graph, is it posible to add certain functin/button to open or 
> execute certain command (may be thru terminal)? I also ned to know about 
> controlling the flow graph through buttons etc (like when i press certain 
> button then it shouls show FFT graph etc)...

Not sure what what invoke a .cpp file means.

> Regards,
> Umair Naeem
> MSc Communication Engineering
> Chalmers University ot Technology, Sweden.
>
>
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