[rrd-developers] Re: rrdgraph question

Ruud H.G. van Tol rvtol at isolution.nl
Thu Jul 28 17:01:34 MEST 2005

Per Jessen schreef:

> Over a 30 day period (for example), I want a graph that shows the
> number hours per 24hour period in which the measured temperature
> exceeds 24C.  Showing _when_ it exceeds 24C is no problem, but
> computing the _amount_ _of_ _time_ it did it, seems difficult?

OK, I must've been reading too fast.

Suppose you have a DS:n:COUNTER, and a CDEF:hot that is either 0 (<=24)
or 1 (>24),
maybe you can make a CDEF:nhot that is average(hot)*(n-PREV(n))?

Grtz, Ruud

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