[rrd-users] Invalid RPN -- why? (solved)

Alex van den Bogaerdt alex at ergens.op.het.net
Thu Dec 13 15:51:00 CET 2007

On Thu, Dec 13, 2007 at 12:03:43PM +0200, Gutza wrote:

> Thank you for pointing me in the right direction, Alex! Indeed, the
> problem was a mismatch between DEFs and the RPN atoms -- the cause
> however wasn't a typo, but rather lack of attention. I was trying to use
> data source names instead of vdefs in the RPN. In other words, I was
> doing something of this sort:
> rrdtool graph /dev/null \
>         DEF:ds1=x.rrd:x:AVERAGE \
>         DEF:ds2=x.rrd:y:AVERAGE \
>         CDEF:custom=x,y,-

Yep, using "x" instead of "ds1".

> Anyway, problem solved, all is well -- I just wrote this for future
> reference.

You're welcome.
Alex van den Bogaerdt

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