Steve, Steve wrote > Finally - why do you have a 'watt_total' DS if you have a 'Watt current'? > I'm assuming the current holds the current rate (RRD loves rates) and the > total is more the total Joules, IE sum(watt_current) over time. In that > case, you could calculate the total value in RRD as a VDEF of > sum(current_average)*interval_length perhaps?
this sounds interresting... but could you explain little more how should the VDEF look like, I did not find an example in the docu for "sum(...)" How do I get the interval_length? is it the heartbeat? How do I get the time for a certain datapoint e.e. for the MAX or MIN? Stefan -- View this message in context: http://rrd-mailinglists.937164.n2.nabble.com/problem-calculating-the-difference-between-MAX-and-MIN-tp7581058p7581068.html Sent from the RRDtool Users Mailinglist mailing list archive at Nabble.com. _______________________________________________ rrd-users mailing list rrd-users@lists.oetiker.ch https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
