[rrd-users] How to plan RRD creation from previously acquired data?

Steve Shipway s.shipway at auckland.ac.nz
Thu Sep 11 01:20:49 CEST 2014

> The problem is that when I update the rrd with for i in $(cat file.csv);
> rrdtool update filename.rrd $i; done i get a lot (really, a lot) of "NaN".

Your problem is that your data are in Scientific format; 'rrdtool update'
wants them as decimals.

Your file says:


RRDTool wants:



Steve Shipway
s.shipway at auckland.ac.nz

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