[Orca-users] Trace a vertical line at the begin of the day/week/month

[Julien Caffet]

Hello everybody,

I would like to trace a red vertical line on each graph generating by 
orca at the begin of each "period" (for example, trace a line at 0h00 on 
daily graph, on monday on weekly graph, etc ...).
The aim of this vertical line is to see easily each period on each graph 
(for example, if I analyse the May graph, I can quickly see when start 
and stop this month).

I don't know if you understand what I want to explain so I put some 
links on which you can see this vertical line:

http://www.usenix.org/event/lisa2000/full_papers/brutlag/brutlag_html/aberrant.gif

http://www.usenix.org/event/lisa2000/full_papers/brutlag/brutlag_html/week.gif

etc ...


I see the "Tick" option in rrdtool but I don't know how to use it.
I installed orca 0.27 with RRDtools 1.2-13 (and the patch for the 
timestamp).

Can somebody help me ?

Thanks.

Julien