cool thank you for the pointer, ill let the list know my progress in a week or so
On 18 November 2010 08:33, Steve Shipway <[email protected]> wrote: > This sounds like the perfect application for the Holt-Winters analysis > functions in RRDTool. > > If you have RRD version 1.3 or (preferably) 1.4, then you can add > Holt-Winters RRAs to the RRD file. These can be set up with a 1-week > period, and will then give you not only the predicted value that you want, > but also a confidence band and even a method of highlighting deviations from > the expected values. > > The documentation on H-W is fairly brief, and its a difficult one to > understand, but the defaults and example parameters work fairly well. > > Steve > > *Steve Shipway* > University of Auckland ITS > *UNIX Systems Design Lead* > [email protected] > Ph: +64 9 373 7599 ext 86487 > ** > ------------------------------ > *From:* > [email protected][rrd-users-bounces+s.shipway= > [email protected]] on behalf of krad [[email protected]] > *Sent:* Thursday, 18 November 2010 12:46 p.m. > *To:* [email protected] > *Subject:* [rrd-users] Creating a graph averaged over a week > > > > > Hi, > > Ok background first, as this isnt as obvious as it sounds. > > I'm logging a data feed of my household power consumption. I have got > graphs working fine for the standard fair daily,weekly monthly etc. However > they are bit spiky. Therefore what I would like to do is generate one for a > generic monday, tuesday etc. By this a mean is keep a high resolution of > data over say a 28 day cycle (maybe more). Then generate a day graph that > plots the average value for x time in a day. > > ie > > add up all the data points for say 09:30:00 on a monday and / 4 and then > plot that point and so on for all of the 4 monday data points. > > I would also like a generic weekday, weekend, and week graphs > > Is this something rrdtool can do? At the moment I cant see how I could as > all the x axis values would be different as they are time based > > > > >
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