Examples of these lines are rivers or roads. Concepts, of human making, are the distinctions made between lines as being either a river or a road or land and water. The power of GIS is in linking the concepts or attributes and the graphic information in a useful way. When visualizing a map the right and left sides of the brain are working at the same time. The left side of the brain is concentrating on the image and the right side is concentrating on the concept.
Language is essential for attributes.
The problem lies in the complexity of language because of its varying degrees of accuracy or classification. The classifying of the objects is part of the attribute side of a map. Vector Vector is composed of points that represents an exact spatial coordinate. These points create lines that are broken down into a sequence of numbers that are stored in the computer's files. When laying out the coordinates for a point, line or area it is usually within the positive or first quadrant.