What is GIS?

GIS is a computer system used for capturing, storing, checking, integrating, manipulating, analyzing and displaying data related to positions on the earth's surface. Typically, a Geographical Information System (or Spatial Information System) is used for manipulating maps with linked databases. These maps may be represented as several different layers where each layer holds data about a particular kind of feature. Each feature is linked to a position on the graphical image of a map. Layers of data are organised in particular manner for study and statistical analysis.

Various types of data sets, such as hydrology, road networks, urban mapping, land cover, and demographic data can contain a multitude of information about a specific feature...all tied together geographically to provide spatial context. In simplicity a geographic information system is a computer-based tool that maps and analyzes features and events that occur on the earth.

Ideal Wind Turbine Locations Using 3D Analyst