What is Geographic Information Systems

What is Geographic Information Systems (GIS)? According to an ESRI website, a GIS software manufacturer ."..GIS combines layers of information about a place to give you a better understanding of that place." (http://www.gis.com Accessed: 4 June 2004). Put simply GIS is a way to combine and interpret spatial information using technology such as computers.
A website (http://www.geoinnovations.com.au Accessed: 4 June 2004) suggests, most data that is used today has a spatial component or spatial data. Basically this is data with a location.…