Re: data smoothing record

[luedeke <andreas.luedeke@psi.ch>]

On Jan 16, 2013, at 3:01 PM, D Peter Siddons <siddons@bnl.gov> wrote:

> Is there a record which can swallow a stream of data from a source
> (e.g. an ADC) and take a running average of N values and output it?

You need to have two compress records to achieve this behaviour:
The first one reads the input scalar in a circular buffer with N values.
The second reads this circular buffer and does an "N to 1 average".
Then you get a new N to 1 average with each new value read.

If you would do it with one compress record, the output would only
update once after sampling N values.
That wouldn't be really a "running average".

Cheers
Andreas

-- 
() Andreas Luedeke, Tel+41-56-3104002, http://people.web.psi.ch/luedeke
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