On 11 April 2016 at 13:05, Nicklas Karlsson
<[email protected]> wrote:

> Is is rather straightforward to calculate from for example the last 100 
> arrival times but a moving average algorithm would be preferred to reduce CPU 
> load. Do anybody have any ideas?

The simplest implementation of a moving-average is probably:

For a gain fraction from 0 to 0.5 where 0.1 gives a 10-sample average:

new = old * (1 - gain) + new * gain

It works better if pre-loaded with the first sample and it is not any
sort of ideal filter as historical values are never actually lost,
just diluted. A true rolling average needs to store N-samples in a
buffer then subtract oldest/N and add newest/N.

-- 
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1916

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