What is Geographic Information Systems (GIS)? According to an ESRI website, a GIS package maker ...GIS combines stages 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 spacial information employ technology such as computers.
A website (http://www.geoinnovations.com.au Accessed: 4 June 2004) suggests, most selective information that is used today has a spatial component or spatial data. Basicall(a)y this is data with a location. For interpreter it wad tell you the dry land value of certain parcels or land or even things much more complicated same(p) telling you the rapid erosion of sensitive sand dunes. A map is the representation of this spatial information.
The basis of using GIS software is simple however there are many interlinking parts to it. Basically as was stated before all you are require to do is add and alter the layers required for your specific task. A layer is a group of comparable information/data, for example roads and rails could a layer and houses/buildings could be another. To pick out certain data you raise run querys through the software. Another feature of the software is that, with permission, you shag edit nearly everything simply and also write programs to do tasks for you.
With most Geographic Information systems it is a matter of adding the beguile data in layers to co-inside with the consumers gets. For example, Fire and emergency services would need maps that show data like available water and assenting tracks while people interested in environmental injury would need information on the spread of feral species ect.
With spatial data, geographical features are represented mainly using symbology. For example a tree may be a triplicity or a certain data may be shaded in colour. They...
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