[rrd-users] extracting tabular data with rrdgraph

Simon Hobson linux at thehobsons.co.uk
Thu Dec 2 20:34:50 CET 2010

N. Tucker wrote:
>Hi, I'm interested in extracting the tabular data that rrdgraph 
>would otherwise plot on the graph, much like I'd do with
>'rrdtool fetch', but I wish to use rrdgraph's powerful calculation 
>features to transform the data and generate additional columns.  Is 
>this possible?

AFAIK you are supposed to be able to use PRINT statements and have 
the results output as text rather than generating a graph. I've never 
tried with with a CDEF though (as opposed to printing a single value 
VDEF) so I don't know if that works.

Simon Hobson

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