Make negative values different color

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wvr120364
Posts: 16
Joined: Tue May 06, 2003 7:48 am

Make negative values different color

#1 Post by wvr120364 » Sat Nov 05, 2005 9:07 am

Hi,
Is it possible to create a cdef that prints a different collor in the graph if it is negative? I gathering weatherdata from accuweather in metric values and want to see when the temperature is dropping below zero. Is this possible and how?

Thanks in advance,
Wietze

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gandalf
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Re: Make negative values different color

#2 Post by gandalf » Sat Nov 05, 2005 3:24 pm

wvr120364 wrote:Hi,
Is it possible to create a cdef that prints a different collor in the graph if it is negative? I gathering weatherdata from accuweather in metric values and want to see when the temperature is dropping below zero. Is this possible and how?

Thanks in advance,
Wietze
See http://forums.cacti.net/viewtopic.php?t=8520 as a starting point
Reinhard

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