[rrd-users] complex CDEF questions

Richard Marshall richiemarshall at hotmail.com
Wed Jun 14 12:42:14 MEST 2006


I am hoping someone can help me with a complex CDEF.

I'm getting large peaks in my graphs due to massive rates of change in the 
data that is (incorrect and) very difficult to work around.

I am currently using the work around for know bad data suggested in the 
tutorial where if the rate is above a certain value then I set the data to 
'unknown'. however this leaves gaps in the graph and is not really what I 

What I would like to do is:
If the current rate of change is substantially greater than the previous 
value (e.g. 100+ times greater) then plot an average of the last rate and 
the next rate of change. So that i would end up with a graph that is without 

Can anyone suggest how i can do this?



P.s. it appears  the hotmail servers have difficulty in delivering to this 
list. 4/5 i get a non deliverable.

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