Ricardo Kleemann wrote: >I'm not yet very familiar with rrdtool, but could I read out data >values for an arbitrary period between time1 and time2 and add up >the values to come up with accumulated? > >I was thinking of a page where I could choose the dates and then >have a graph drawn for those dates, including the accumulated values >as well.
That's another approach - export/dump the data from rrdtool and process it externally. You can't do that in rrdtool graph - AFAIK, you have to create a CDEF which is "value times span" and which covers <span> period of time, and then use a VDEF to show the average of that. Form the docs : >Note that currently only aggregation functions work in VDEF rpn >expressions. Patches to change this are welcome. -- 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 [email protected] https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
