GIS Dictionary

[geodesy] The science of measuring and representing the shape and size of the earth, and the study of its gravitational […]

A datum that is the basis for calculating positions on the earth’s surface or heights above or below the earth’s

[coordinate systems] The angle that a line drawn perpendicular to the surface through a point on a spheroid makes with

[coordinate systems] The angle between the plane of the meridian that passes through a point on the surface of the

A survey that takes the shape and size of the earth into account, used to precisely locate horizontal and vertical

[empty] The process of adding demographic and lifestyle data to your maps.

[map display] A designated boundary around a geometry that, if crossed, initiates a notification. Geofences are often used in real-time

[geography] Of or relating to the earth.

A reference system that uses latitude and longitude to define the locations of points on the surface of a sphere

A measurement of a location on the earth’s surface expressed in degrees of latitude and longitude.

Information describing the location and attributes of things, including their shapes and representation. Geographic data is the composite of spatial