ToHow can we subtract two graphs using a command...?

I ploted two rf plots. But i want to subtract these two graphs how can I do this..?

[DGM]

What kind of plots? How is the data arranged? Did you make the plots? Do you have the arrays used to make the plots? Can't you just subtract the arrays?

Answer 1

[laurent jalabert]

as the coordinates of each points of those 2 graphs are probably not matching, I suppose that you can use linspace or spline functions, which generate a new vector containing "artificial" data between each plotted points . Then you can substract point-per-point and display the new graph.