How to plot power lines on the motor torque and speed graph

I have a plot of torque and rpms but i need to plot different power lines according to the change in vehicle speed. I have calculated power demand values for each vehicle speed but I am unable to plot them with motor torque and speed curve as there is single value of power demand at each vehicle speed.

Any ideas?

Answer 1

[Cris LaPierre]

Do you know about hold? If so, I'm not sure I understand why you can't plot them. Your x vector is the speeds, and your y vector is the corresponding power demands. Plotting it, then, is just plot(x,y)