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

Fabien Wernli wernli at in2p3.fr
Thu Oct 30 12:01:47 CET 2008

On Thu, Oct 30, 2008 at 11:05:16AM +0100, 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 ?

sure! use an appropriate RPN, e.g.

myds, $MAX, LT, myds, NAN, IF

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