Hi, I have been through the documentation and I can't seem to find a way for the graph to grow from the left instead of the right. So, I thought I might try and do it manually by fetching the "first" entry from the rrd - similar to the "last" function.
However, as I should have expected, although last returns the last input into the rrd, first is returning the first entry for the RRA, not the first time that I inserted data. Is there any way to determine the first time I inserted data into the RRA as opposed to the start of the RRA period? Thanks, Chris On 25 June 2013 16:05, Chris Mason <ch...@netnix.org> wrote: > Hi, > > I suppose the other option, if I am unable to achieve what I wanted, is to > only draw the trend line from the start of the actual data. > I use the following logic to draw a trend line for data source "DS1": > > VDEF:DS1Slope=DS1,LSLSLOPE > VDEF:DS1Int=DS1,LSLINT > CDEF:DS1Trend=DS1,POP,COUNT,DS1Slope,*,DS1Int,+,0,INF,LIMIT > LINE1:DS1Trend#808080::dashes'; > > Is it possible to restrict the trend line to start when my data started > instead of at the beginning of the graph? > I would assume that any value within DS1 that was before my data would be > classified as unknown - is my DS1Trend CDEF removing the unknowns? > > Thanks, > Chris > > > On 23 June 2013 13:17, Chris Mason <ch...@netnix.org> wrote: > >> Hi, >> >> I have the following graph which displays daily maximums over a period of >> a year: >> >> http://netnix.org/graph.png >> >> I have added a trend line to the graph using the Least Square Lines >> method. I am currently shifting the graph by 3 months using the following >> method: >> >> -s -1y+3months -e now+3months >> >> This works fine, but I wanted to try and shift the graph so the start of >> the graph is at the left most point and the graph is only ever displayed in >> the first 9 month period. It is easy if I only ever had more than 9 months >> worth of data, but if I only had 3 months worth of data, then I am looking >> for the graph to still start from the left with only the left 3 months >> being used? >> >> I am looking to try and do something similar to the "Filesystem >> Utilization and Predicted Trends" graph in the RRDTOOL gallery where in the >> picture, the graph is using the left hand side and the trends go into the >> right hand side. >> >> Any pointers? >> >> Thanks, >> Chris >> > >
_______________________________________________ rrd-users mailing list rrd-users@lists.oetiker.ch https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
