Definition of Imagery Imagery means to use figurative language to represent objects, actions, and ideas in such a way that it appeals to our physical senses. Usually it is thought that imagery makes use of particular words that create visual representation of ideas in our minds.
A velocity vector is an arrow that shows direction and speed of motion of a GPS site. The velocity vector for each site shown in Figure 2 is calculated from data like those shown in Figure 1. A vector is a mathematical construct that has a magnitude and a direction.
@AndrejSlavejkov Velocity is a vector. Vectors can't be negative, strictly speaking. But for a 1D vector (which can only be pointing two ways) you can call one way positive or forwards, and the other way negative or backwards. â immibis Jun 15 '15 at 14:43.