Yesterday Faraaz Sareshwala wrote: > Ah right. So if I set my season to be two days, I could then use > RRDtool to predict what the value will be in two days based on > previous trends? Or have I misunderstood something here? :P
no, rrdtool will only predict 1 step, regardles of season length ... cheers tobi > > Faraaz Sareshwala > > Faraaz, > > Today Faraaz Sareshwala wrote: > > > Yeah, I've been using the following RRA command in creating the rrd file: > > > > "RRA:HWPREDICT:2016:0.1:0.0035:20" > > > > I'm able to get confidence bands and tick marks along with the HWPREDICT > > line on our graphs. I'm just wondering how to use that data that RRDtool > > collects to display future values. Any help is greatly appreciated :D. > > > > Faraaz > > > > On Wed, Sep 02, 2009 at 11:14:58AM -0700, Faraaz Sareshwala wrote: > > > Yeah, I've been searching on the Internet for some time now on how to > > > predict future values based on past trends using RRDtool for some time > > > now but haven't gotten anywhere. I'm not so concerned about that graph > > > in particular, but would like to bring the prediction of future data > > > points to our graphs. Are there any pages out there that describe how > > > to do this? > > > > Have you seen the section on Holt-Winters in the rrdcreate > > documentation? It tells you that you need to create certain RRAs (which > > can be automated by creating the HWPREDICT RRA without the final > > argument). Then you can use them for graphing or in RPN calculations. > > note the HW as it is implemented in rrdtool only predicts the > 'next' value ... the reason for this is that rrdtool uses this to > detect aberrant behaviour and for this we do not need to predict > into the future ... > > cheers > tobi > > > > > -- > > Darren > > > > _______________________________________________ > > rrd-users mailing list > > [email protected] > > https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users > > > > > > -- > Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten, Switzerland > http://it.oetiker.ch [email protected] ++41 62 775 9902 / sb: -9900 > > -- Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten, Switzerland http://it.oetiker.ch [email protected] ++41 62 775 9902 / sb: -9900 _______________________________________________ rrd-users mailing list [email protected] https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
