Re: [Discuss-gnuradio] Vector average with decimate block

[CEL]

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  
> 
> 
> 
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