[rrd-users] Combining Multi-RRD Datapoints in Graph
Fernando Di Nucci
fernando.dinucci at gmail.com
Fri Feb 13 15:30:01 CET 2009
William R. Lorenz ha scritto:
> I'm looking to take 2-4 unique RRD files that plot the same data from
> different perspectives (i.e. temperature readings from four different
> sensors) and average all the data points together into one graph line.
> Is there a CDEF, VDEF, or other such function that will allow me to
> average more than one data source together for this rrdgraph purpose?
> If someone could point me to the applicable section of documentation
> and/or has an example, I'd be very appreciative. Thanks, in advance.
try this way
if t1, t2, t3, t4 are the 4 temperatures,
Hope this helps
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