[rrd-users] How to calculate desired value?
linux at thehobsons.co.uk
Sat Aug 23 16:06:46 CEST 2014
spock <collector at sappers.de> wrote:
> I tried:
> CDEF:heattime2=heat_flag,900,*,60,/ \
> GPRINT:totalheattime:"Total\: %2.2lf h \n"'
> but I get wrong results. I probably have to do the calculation completly
> Can anyone help me out here?
> I should get perfectly aligned values as a result: 0.25 h; 0.50h; etc.
> How can I achieve this?
Give us a clue to go on, what values do you get ?
Is it that you expected (say) 15 but got 14.99, or you got something completely different ?
Your approach is right, I suspect rounding errors come into it.
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