[rrd-users] rolling average

[Leif Neland]

I'm measuring the temperature of my fridge, which have a temperature cycle 
of approx 1 hour.

The weekly graph has sample time of ½ hour, so the graph jumps up and down 
between -17 and -22 from one sample to the next. I'd like to graph the 
rolling average of this and the last sample, which should show a much 
smoother graph.

Is it possible to have a weighted average like eg. 0.5 val[t]+0.3 
val[t-1]+0.2 val[t-2] ?

Leif 

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