difference between two graphs

[thebloodviper]

In the course of my research i have come up up with a problem where , i have two different graphs having the same xy config and the same time scale.What i need is a difference plot the difference of the two graphs.Can anyone please suggest a way to go about it ??

the basic problem statement is : graph 1 is a cumulative graph (as a result of all factors involved) and graph 2 is a individual graph (representing the contribution of a single graph), the desired output is a cumulative graph without the factor involved in graph2 i.e. a difference graph

[Harold_Timmis]

are you using an xy graph?

[GerdW]

Hi viper,

just subtract the y-values of graph 2 from graph 1...

[Harold_Timmis]

this might help: