[rrd-users] Making sure no area overwrites another

Christohper Pope cpope at sell.com
Mon Jan 21 00:06:29 MET 2002


Is there an option for 'rrdtool graph' that ensures no set of data completely
overlays another set of data on the same graph.  Example:

Your graphing the speed of 2 cars, say a ferrari and a geo metro and the
graph command looks like this

rrdtool graph --start speed_daily.png -84600 \
DEF:f=cars.rrd:ferrari:AVERAGE \
DEF:m=cars.rrd.:metro:AVERAGE \
AREA:#0000FF:"Geo Metro" \

Odds are someone looking at the graph would never see the Geo Metro because typically, 
Farreris go faster than Geo Metros.  I can't just change the order that they are graphed in
because one day that guy driving the Metro is going to put nitrous in it and beat the Farreri.

So what i'm trying to ask is, "Is there any way to make rrdtool plot the variable with the largest range first,
and the lowest range last?"  This would mean no matter how fast either is going, they would both show up on the

Christopher Pope

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