Re: [Discuss-gnuradio] Working with GRC! Vector decimate

[CEL]

Hi Glen,

that is *awesome*! 

Best regards,
Marcus

On Fri, 2018-03-16 at 10:57 -0400, Glen I Langston wrote:
> Hi
> 
> Thanks for your help.  I know no-one else cares, but
> I’ve finally figured out all the steps to get Vector decimation working with 
> GRC.
> 
> A few notes:  I don’t think forecast() is ever called with a decimate block.
> 
> Multiple output vectors are possible, and care needs to be taken to count
> all the outputs. 
> 
> My initial QA only had one vector output, so worked fine.
> GRC was generating multiple vectors as output and my vave code was chocking
> on multiple outputs.
> 
> I’ve yet to figure out how to put this block in GitHub
> .  Here
> are the bits and pieces.
> 
> Best regard
> 
> Glen
> 
> 
> > On Mar 15, 2018, at 4:32 PM, Müller, Marcus (CEL) <address@hidden> wrote:
> > 
> > Hi Glen, 
> > 
> > you can't be a complete failure. Else you wouldn't be part of this
> > community :) and you very certainly wouldn't be writing GNU Radio
> > blocks after only four weeks!
> > 
> > Quick look at your work:
> > 
> >        out = output_items[0]
> >        # get the number of input vectors
> >        n = len( input_items)
> >        print 'Number of work input vectors: ',n
> > 
> > hey, what's good for output_items is good for input_items, too!
> > Point I'm trying to make: "output_items" is in the end a container of
> > all output streams; remember, blocks can have multiple output streams.
> > You have exactly one, so you take that by saying 
> > out = output_items[0]
> > 
> > Same goes for input_items; you want the first one, so use
> > input_items[0] instead of input_items.
> > 
> > Hope that helps a bit!
> > 
> > Best regards,
> > Marcus
> > 
> > On Thu, 2018-03-15 at 16:23 -0400, Glen I Langston wrote:
> > > Hello GnuRadio fans,
> > > 
> > > I’m afraid I’m a complete failure at creating my own vector average
> > > with decimate block.  This is my 4th week at this endeavor...
> > > 
> > > I’ve run through a number of c++ and python web examples and each time am 
> > > getting
> > > hung up somewhere.
> > > 
> > > I’ve been following the examples from many gnu radio 
> > > web sites and trying to get them to complete
> > > 
> > > Including:
> > > https://wiki.gnuradio.org/index.php/OutOfTreeModules
> > > 
> > > I got the C++ example to work but could not get the python qa test to 
> > > pass.
> > > 
> > > In any case, the vector average with decimate must be an easy example
> > > but I can not get the qa part to work.
> > > 
> > > Is there anyone out there who could create the very rudimentary
> > > vector average with decimate that they could share?
> > > 
> > > Please find my code attached.  The python part is simple. 
> > > The QA part is not running yet.
> > > 
> > > I’ve started with:
> > > 
> > > gr_modtool create vave
> > > cd gr-vave
> > > gr_modtool add -t decimator -l python vave  
> > > 
> > > 
> > > 
> > > _______________________________________________
> > > Discuss-gnuradio mailing list
> > > address@hidden
> > > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
> 
>

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