A plotter is a type of printer that produces digital graphics. The plotter uses a pen to draw images on a piece of paper or other material. Plotters are often used to create maps, blueprints, and other types of drawings. Digital graphics are created using vector-based software programs. Vector graphics are made up of lines and curves that can be manipulated to create different shapes. When you print a vector graphic, the plotter creates the lines and curves by moving the pen back and forth across the paper. This process is called vectoring.