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Home » What is GIS

GIS (Geographic Information System) is an exciting technology which allows us to visualise, explore, question and make sense of the world around us.

A GIS comprises a computer, GIS computer software and geographic information stored in a database. It provides a powerful set of tools to answer questions about different locations: not only "where", but "why", "how" and "what if?" Complex geographic information can be represented as maps or graphs, allowing you to analyse the information, and see patterns and trends quickly and easily. You can explore and investigate the relationships between places and different sets of information. This then allows you to make informed decisions.

In a GIS, layers of information about places are stored in the database and can be displayed as a map. Multiple layers, representing different themes (such as aerial photography or historic maps), can be overlaid, creating a stack of layers, each of which can be turned on or off, or peeled back.