Chiming in that this is also a great opportunity to contribute improved
documentation after you've figured out your answer.
In addition to Marcus' comment, looking at the code helps (and in this case
is pretty easy):
set_history(d_length);
// skipping some stuff
@I_TYPE@ sum = 0;
int num_iter = (noutput_items>d_max_iter) ? d_max_iter :
noutput_items;
for(int i = 0; i < d_length-1; i++) {
sum += in[i];
}
for(int i = 0; i < num_iter; i++) {
sum += in[i+d_length-1];
out[i] = sum * d_scale;
sum -= in[i];
}
The first loop builds up an "initial" sum, the second loop does the grunt
work of generating output samples. You'll always get the sum of the last
n_length samples scaled by some factor (n_length for arithmetic mean).
On Thu, Jan 7, 2016 at 1:23 PM, Pedro Gabriel Adami <
pedrogabriel.ad...@gmail.com> wrote:
> Dear all,
>
> The documentation of the Moving Average block made me feel confuse about
> its functionality. It says: "output is the moving sum of the last N
> samples". If I need a sum of 100 samples, this block will sum the 100
> samples that I need and after that it will get another different samples?
> For example: 1+2+3+...+100 and 101+102+...200. Or it will do this:
> 1+2+...+100 and 2+3+...+101 and 3+4+...+102.
>
> I know it seems a little confuse, but I didn't find a better way to
> explain this, sorry.
>
> Thanks in advance.
>
> --
> Atenciosamente,
> Pedro Gabriel Adami
> Graduando do 5º período de Engenharia de Controle e Automação no Instituto
> Nacional de Telecomunicações - Inatel
>
> _______________________________________________
> Discuss-gnuradio mailing list
> Discuss-gnuradio@gnu.org
> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>
>
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