[rrd-users] an error message using RRDTool

[Tobias Oetiker]

Hi David,

> Using RRDTOOL on a Windows based system, for the 1st Time, working on
> the Tutorial, and discovered an error message and would like someone to
> help resolve asap Shown below:
>
>
>
> C:\wamp\www\rrdtool\rrdtool-1.2.27-w32>rrdtool graph speed4.jpg --start
> 920804400 --end 920808000 --vertical-label km/h
> DEF:myspeed=test.rrd:speed:AVERAGE "CDEF:kmh=myspeed,3600,*"
> CDEF:fast=kmh,100,GT,100,0,IF CDEF:over=kmh,100,GT,kmh,100,-,0,IF
> CDEF:over=kmh,100,GT,kmh,100,-,0,IF CDEF:good=kmh,100,GT,0,kmh,IF
> HRULE:100#0000FF:"Maximum allowed" AREA:good#00FF00:"Good speed"
> AREA:fast#550000:"Too fast" STACK:over#FF0000:"Over speed"
>
> ERROR: Attempting to reuse 'over'
>
> it seems it does not understand 'over' in the IF ELSE statements:
> over=kmh ,100,GT,kmh,100,-,0, CDEF:over=kmh...

you have two IF/THEN/ELSE statements here ... with their results
both assigned to the same variable. rrdtool does not like that and
complains.

cheers
tobi

>
>
>
> Best Regards,
>
>
>
> David
>
>
>
>

-- 
Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten
http://it.oetiker.ch tobi at oetiker.ch ++41 62 213 9902