Changing the way you learn

Question	Answer
Point data	A reference of a location/node depicted as a symbol.
Line data	A network; Indicates flows of traffic, water, people (streets) etc.
Vector data	attributes; geographical features expressed in geometric shapes.
Raster data	An image made by pixels constructed by a column of grids and cells. Each cell has one value.
Geodetic datum	Calculates the earth's surface, taking into consideration heights above and below earth's surface.
Datum	A measure of data representing the area if a feature.
Ellipsoid	When representing the earth as an ellipse rotating on a minor axis.
Geoid	A hypothetical surface that models the earth's oceans if there was no irregularities such as mountains.
Metadata	Information stored about the characteristics of a piece of data.

GIS Terminology

	Created by georgia.s.couch over 10 years ago