How to overlay multiple graphs in one graph

[venkatpandiri]

I am new to using cacti if I am asking the same question which has been answered in please excuse me. And point me to the right link.

We are cacti for gathering system metrics like CPU, memory, network and others.

We run load and stress tests. We would like to compare the graphs of cpu, memory and other from test to another.
Is it possible to compare one graph of CPU from say period 10/1/08 to 11/1/08 or any other date times.

Please advise how to do it and also if Cacti does not do it is there any plugins which do that.

[kyosanim]

You should try aggregate plugin.
http://forums.cacti.net/viewtopic.php?t=19474

[venkatpandiri]

Aggreagate does combine 2 graphs how do you overlay graphs with 2 different lines in the graph.
Please let me know if Im missing some thing here

[acrophile]

I'm looking for the same thing...