Draggable plot lines?

[excitedbox]

Is it possible to drag plot lines to adjust an array of x,y values? I mean like clicking a point on the line and adjusting it up and down.

If not, It would be awesome to add for devices such as a reflow oven or anything that needs a time and temp. or time and speed control like a spin coater. It could also be used to control a power supply output. So really a ton of uses for appliances or embedded devices.