[rrd-users] How To Graph with Occasional NaN (OK)

[fredrik at n-mental.com]

11.04.2012 15:00 skrev Patrick Best:
> Hi everyone;
>
> I have a data source that occasionally provides a NaN.
>
> This is OK for us, it's expected about 20 times a day or so.
>
> What we'd like to do is to eliminate "gaps" in the graph data, by
> using a technique like drawing a similar value as the last good poll.
>
> Is there a way we can do this?
>
> Is there a selector that can tell rrdgraph how to interpret NaN ? Or
> would the mechanism be in the creation of the rrd?


Can't you just increase the heartbeat to permit a longer time without 
data before a NaN is recorded? Or is the Nan's dou to other reasons than 
too long time between data samples?