Get animation curve off movement




Is there a way to get a curve created off of a movement(speed) of an object in Maya?

The driver is animated linearly , but the driven objects movemnt isn’t linear (if anyone is interested, the driver is the uParam of arcLengthDimension node. I want to get the locator’s movement that shows the length so I know the relation between uparam and the length)

Hope I explained it clearly.