[rrd-users] How to find a grafics error?

David Thornton northdot9 at gmail.com
Thu Jun 11 15:45:25 CEST 2015

I would also like to point out that if you have a couple of unknowns in the
hi res data they might not be noticeable at high res, but as you aggregate
data a single unknown value in a group of aggregated values will make the
aggregate value "unknown" making it more noticeable.  unknowns propagate ,
taking out larger and large data points ( This is also true for cdefs . ) .


On Wed, Jun 10, 2015 at 6:09 AM, Peter A. Menzel <prot_from_spam at famenzel.at
> wrote:

> Hello,
> my cgi output for the monthly periode seems to have errors (in detail: see
> attached image).
> As you can see on http://hk1.famenzel.at/cgi/hk1.cgi the output for the
> last week ("letzte Woche") is ok (continued graphs for the temperatures),
> but shown interrupted in the monthly graph ("letzter Monat").
> Also the pump indicators ("HK1Pumpe", "HK3Pumpe" aso) show some activity
> in this graph and the yearly one ("letztes Jahr"). This seems to be wrong
> too.
> How can I find the source of the problem?
> Thank you and BR
> Peter
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