Re: vector index selector

[Marcus Müller]

Hm, in that case, this would be a really easy thing to just write in an 
embedded python block!

On 15.11.21 12:48, Ali G. Dezfuli wrote:
> Thanks, Marcus, but I actually want to have something like a general demultiplexer to 
> separate the preamble from the payload.
> I couldn't find a SIMPLE demuxer ("Header/Payload Demux" is very complicated.)
> What you kindly said is something like a general downsampler/decimator which of course has 
> its own use.
> For example, with a correlator, I put a tag at the frame start, and with "Tagged Stream 
> Aligned" and "Stream to Vector" I will have a ready-to-be-demuxed frame to get to the payload.
>
> On Mon, Nov 15, 2021 at 2:14 PM Marcus Müller <mueller@kit.edu <mailto:mueller@kit.edu>> 
> wrote:
>
>     Hi!
>     Not in itself, but you can do
>
>     ---vector-->
>        [Vector to Stream, num items = n]
>         --->
>          [Keep M in N, M=1, N=n, initial offset=index]
>           ---->
>
>     Best regards,
>     Marcus
>
>     PS: A PR to improve "keep M in N" to directly deal with vectors, or to add 
> a block
>     "Vector
>     Extract" that does what you describe (take vectors in, and have a parameter 
> with indices
>     to extract) to master, would certainly be welcome.
>
>     On 14.11.21 07:55, Ali G. Dezfuli wrote:
>      > Hi all,
>      > is there a block in GRC to get a vector and output a vector with 
> selected indexes
>     (as a
>      > parameter)?
>      > thanks,
>      > AGD

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