[mrtg] Graphs with offset or predefined range

Dan mrtg at dandoore.com
Sat Sep 15 17:50:50 CEST 2007

mrtg at noegginet.ch wrote:

> I am monitoring some temperatur sensors in our serverroom.
> That works perfect and I get the graphs I expect.
> But different as monitoring the temperature outside a building the temperature inside an air-conditioned room has only a small
> hysteresis and most of the graph range is "unused".
> Example: the room temperature is between 19 °C and 21 °C. The graph is beginning on the bottom with 0 and scales up to 28 °C. So the
> drawed line is quite flat.
> Is there any way to set an "offset" for the graph that the range is e.g. between 15 and 30? (so the Graph starts at 15 °C not at 0
> °C)

See Docs: http://oss.oetiker.ch/mrtg/doc/mrtg-reference.en.html
Section: Options
Option: expscale

That should make it more visible, either that or choose 'unscaled'.


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