maths in mrtg

Nick price <[email protected]> Tue, 20 Oct 2015 15:57:59 +0200
Newsgroups gmane.network.mrtg.user
Message-ID <[email protected]>
For my incoming mains power supply I have a monitor box that gives me kVA
and kVAR values via SNMP  I need to get kW into a graph.

 

I need to do the following maths  kW=(kVA^2-kVAR^2)^0.5 how do I get mrtg to
do this

 

Many thanks in advance

 

Nick

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