What is a GIS - example?
GIS is a powerful tool because it allows for the analysis of the relationship between geographic objects and quick, "what if" scenario building. A simple example of GIS in action is to imagine a map of New York State with the county boundaries shown. A GIS could be created that associates census data for each county with the county shapes. We could use the GIS to perform an analysis and create a resulting map. In this example, we have used the GIS to analyze the counties based upon the number of farms in each county, producing a new map to illustrate the results.
Below shows a portion of a county data file that could be used by GIS to produce a map of New York State that shades the state based on the number of farms per county. The resulting GIS figure is shown below the data file.
