perhaps this has something to do with the fact that you're trying to print multiple values (a line full of values) instead of a single value? perhaps you need to use some function which will boil your data down to a single number?
On May 14, 2011, at 12:49 PM, Kevin Day wrote: > > On May 14, 2011, at 11:30 AM, Jaime Lozano wrote: > >>> rrdtool graph --imgformat PNG out.png DEF:ds0=in.rrd:x:AVERAGE >>> CDEF:unknown=ds0,UN,INF,UNKN,IF VDEF:ds0max=ds0,MAXIMUM >>> VDEF:ds0min=ds0,MINIMUM DEF:ds1=in.rrd:y:AVERAGE HRULE:ds1 >> >> In http://oss.oetiker.ch/rrdtool/doc/rrdgraph_graph.en.html it says about >> VRULE: >> "It is an error to use vnames from DEF or CDEF here" and then "HRULE >> acts much like LINE except that will have no effect on the scale of >> the graph" so I think you are wrong, and you cannot do that. If HRULE >> is a straight line, why trying to use a non constant value? >> > > See, I interpreted that same sentence as though it meant "You can treat an > HRULE as a LINE, it just doesn't adjust the y scale to make it fit". > Partially because both LINE and HRULE say they take a "value", and values > "can be generated by DEF, VDEF, and CDEF". > > In either case, the error message being produced is wrong, it refers to the > wrong named value. Depending on what you have before trying to use an HRULE > the vname printed changes to other seemingly random vnames or is blank. > > > Thanks! > > -- Kevin > > _______________________________________________ > rrd-users mailing list > rrd-users@lists.oetiker.ch > https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users _______________________________________________ rrd-users mailing list rrd-users@lists.oetiker.ch https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
