> If I want to measure it in kWh, I think that's what I'm going to do :)
Funny. So you don't disagree with the "or, if you want, kWh" below but you still feel necessary to attack me? >> Make sure you understand W=J/s and kWh = 1000*3600*1J. Inside rrdtool >> everything is <something> per second, so inside rrdtool you should store >> Joules (or, if you want, kWh) which will show up as Joules per second aka >> Watt. > sigh... > Did it seem to you that I had any issues converting units ? It still does. Else you would understand that this 'problem' is no different from having bits (or megabytes) in your database and using CDEF and GPRINT to display the average, after being multiplied by 86400, to get the amount of bits (or megabytes) in a day. Or, if you like the automobile examples better, you measure meters, or kilometers, or miles. This will become meters (or kilometers, or miles) per second. Then you let RRDtool compute the average after multiplying by 86400 to get meters (or kilometers, or miles) in a day. Yes, it's that simple. You start with a number of Joules (or kWh) per second, you multiply by a number of seconds, and end up with a number of Joules (or kWh). If the average is 1J/s (== 1W), and if you multiply by 86400s, you can cross out the 's' units and end up with 86400J. And if you input kWh instead of J, you end up with kWh instead of J. Which is what you ask for. _______________________________________________ rrd-users mailing list [email protected] https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
