[rrd-users] Filtering of RRD Data prior to graphing ?

[Tobias Oetiker]

Robert,

Today Robert wrote:

> 4) filter the values greater than X before graphing  (this would be
> nice, while keeping the auto scaling of the graphs!!)
>
> Is there a way to to (4) with current implementation of RRD ?

CDEF:new=value,x,GT,val,UNKN,IF

should do the trick ... it has the same effect as if the data would
have been caught on initial update, except that the peek may show
up as a smaller hump in consolidated RRAs which would not happen if
the limits had been set properly in the first place.

cheers
tobi


-- 
Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten, Switzerland
http://it.oetiker.ch tobi at oetiker.ch ++41 62 775 9902 / sb: -9900