Finding max index in a vector

How do I find the index of the max value in a vector from GRC?
The max_xx block outputs the max value, but not its
index, despite what it’s documentation says:

“Data is passed in as a vector of length from multiple input sources.
It will look through these streams of data items and output two
streams. Stream 0 will contain the index value in the vector where the
maximum value occurred.”

I checked the code template for max (GR v3.7.3), and it doesn’t even
seem to retain the index of the max it reports.

@(^.^)@ Ed

On Thu, Apr 24, 2014 at 11:32 AM, Ed Criscuolo
[email protected]wrote:

I checked the code template for max (GR v3.7.3), and it doesn’t even
seem to retain the index of the max it reports.

@(^.^)@ Ed

Ed,

Yeah, this block does not match the description. It simply outputs the
maximum value for a given vector of samples. I’m going to fix this now
since I’m about to push a few other changes.

I can see a use for having the block have an optional secondary stream
with
the index value, though.

Tom

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Hi Ed,
I’m on a train. I wanted to try out how long it takes to do it
including implementing rudimentary QA. So I just went ahead and tried:
about 205s, most spent on figuring out how to get the IO signature
straight.
Enjoy: https://gist.github.com/marcusmueller/11294819

Greetings,
Marcus

On 24.04.2014 17:32, Ed Criscuolo wrote:

I checked the code template for max (GR v3.7.3), and it doesn’t
even seem to retain the index of the max it reports.

@(^.^)@ Ed

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