What is the traj in the drone example?

[Rakesh-Paul01]

Hi,

I was working with the drone entity and was wondering what was the traj in the example. Initially I though I must be the coordinates, but since it has 4 values it can't be coordinates of the locations the drone has to be at, It could be quaternions as they can be 4 values, but what purpose would quaternions serve here? we aren't talking about the rotations of the drone object.

What's most probable is that they are just some values that the propellers should spin with and thus would result in the movement of the drone, in such case I don't feel like we should name it as traj.