Hi Gerd, you can do this in CDEF by testing for unknown and putting 0 or 1 then you SUM the result to get the known vs unkonwn ration for the data you look at ...
cheers tobi Today Gerd Mueller wrote: > Hi, > > I still have the trend problem > (http://lists.ee.ethz.ch/rrd-users/msg11384.html) :-( > > So I thought about solutions and found 3 possible ways: > > 1. a new special time value "STARTEDAT" (seconds since first value > stored) > > 2. a new TREND, which ignors UNKN values > > 3. a new Function SUM like TREND but sums all values instead of building > an average. > > My favorite would be the third one. > > What do you think about it? > > Gerd > > > > > -- > Unsubscribe mailto:[EMAIL PROTECTED] > Help mailto:[EMAIL PROTECTED] > Archive http://lists.ee.ethz.ch/rrd-developers > WebAdmin http://lists.ee.ethz.ch/lsg2.cgi > -- ETH Zurich Tobias Oetiker, IT Support Group D-ITET (ISG.EE) ETL F24.2, Physikstrasse 3, 8092 Zurich, Switzerland Phone +41 44 63 25286, http://people.ee.ethz.ch/oetiker/ -- Unsubscribe mailto:[EMAIL PROTECTED] Help mailto:[EMAIL PROTECTED] Archive http://lists.ee.ethz.ch/rrd-developers WebAdmin http://lists.ee.ethz.ch/lsg2.cgi