Viewing the current and previous week together

[fizz]

Hi all,
I'm interested in displaying in the same graph one line for the current time and one line for the previous week. It's pretty simple to do it in RRDTool:
DEF:thisweek=router.rrd:ds0:AVERAGE
DEF:lastweek=router.rrd:ds0:AVERAGE:end=now-1w:start=end-1w
(pasted from http://oss.oetiker.ch/rrdtool/doc/rrdgraph_examples.en.html)

So basically, what I need to do is add some string after the Consolidation Function (AVERAGE/LAST/MIN/MAX) string. Unfortunately, I could not find how to do that when creating a graph template in Cacti.

Any help would be very appreciated!

Thanks a lot,
--fizz

[gandalf]

This feature is currently not supported by cacti.
What comes nearest is the timeshifter, e.g. shift the current graph(s) one week back and forth in time. But it will reload the graphs and you'll only see either current OR previous week.
Reinhard

[fizz]

Thanks for you reply gandalf.
Can I possibly develop an addon or anything like that which would help me do it?

Thanks,
--fizz

[gandalf]

This would be a plugin. See http://www.cactiusers.org for help
Reinhard