What additional component does a motion chart rely on to add animation to a data set?

A motion chart enhances a data set by incorporating the element of time, which allows users to visualize how data trends and relationships evolve over a specified period. By using time as a variable, the motion chart can animate the data points, showing changes and movements in the dataset as it progresses through time. This dynamic visualization helps users identify patterns, cycles, or anomalies that may not be apparent in static charts.

The choice of time as the additional component is crucial, as it transforms the representation of the data, allowing viewers to observe and engage with changes dynamically rather than just presenting a snapshot of data at a single moment. Other components such as location or size might provide valuable context about the data, but only time facilitates the animation that distinguishes motion charts from other static chart types.