[rrd-users] How to find first valid dp in rrd - repost - where arethe experts?

[Alex van den Bogaerdt]

----- Original Message ----- 
From: "Karl Fischer" <rrd-users at ficos.de>
To: <rrd-users at lists.oetiker.ch>
Sent: Tuesday, November 18, 2008 3:17 PM
Subject: [rrd-users] How to find first valid dp in rrd - repost - where 
arethe experts?


>
> Hello,
>
> since there was no answer to my last post, I'm trying again.
> Where are the experts?
>
> Is there a good way to find the first valid (not UNKN) datapoint in rrd?
>
> rrdtools first doesn't quite do what I expected.
> Instead it gives you "rrdtools last" - rrasize.

Have you looked at, and tried, VDEF first ?

In http://oss.oetiker.ch/rrdtool/doc/rrdgraph_rpn.en.html search for 
Example: VDEF:first=mydata,FIRST