Long wrote: >I also get avg(A) + avg(B) is not equal to avg(A+B). Can someone explain >this too?
That's odd because it should work. >Also, last(A) + last(B) is equal to last(A+B) for me. Will this always hold >or I am just lucky that things add up nicely for me just for this case? It should do provided "last" means the same in both databases. If the step value is the same, and both are updated near enough at the same time (or at least on or shortly after the end of each step period) then the time of "last(something)" should be the same. But if you last update was a second before the end of a step for one, and just after for the other, then last(something) would refer to different time periods until the old one got updated and the period could be completed. -- Simon Hobson Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed author Gladys Hobson. Novels - poetry - short stories - ideal as Christmas stocking fillers. Some available as e-books. _______________________________________________ rrd-users mailing list rrd-users@lists.oetiker.ch https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
