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Geogrpahic Information Systems (GIS) represent features of the earth, such as buildings, cities, roads, vegetation, states and rivers on a computer. GIS isn't new, although many people haven't heard about it. On any give day, millions of people around the world use GIS in a huge variety of industries and for a wide range of purposes.

People use GIS to visualise, question, analyse, manage and understand data about the physical world and human activity. GIS allows this information to be viewed visually, on a map, which provides an advantage over viewing this type of information using a database or spreadsheet. Why? Because maps can reveal spatial relationships, reveal patterns and identify problems between layers of information that may not be apparent in tables or text.

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