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HED 460
Geographic Information Systems
Cartographers Geographers Business managers Marketing strategists Financial analysts Professional planners
HED 460
Geographic Information Systems
Think of all the uses for GIS that you came across in your reading…..
HED 460
Geographic Information Systems
A system for mapping and analyzing the geographical distribution of data Data are any information stored in a
database as long as it can be linked to a location
GIS databases are relational
HED 460
Geographic Information Systems
Like Access, information is stored as records. Each record in a GIS database
contains information used to draw a geometric shape
A point, a line, a polygon
HED 460
GIS
Stores any information that can be linked to places
Does 2+2=4 have anything to do with geography? No, but if it were true in some places
but not in others it would
HED 460
GIS
Luxury cars are mostly bought by people who earn more than $100,000 a year.
Significant percentage of Hispanic consumers prefer to buy groceries with Spanish-language labeling or to shop in a store where Spanish is spoken.
HED 460
GIS
GIS map files can represent Whole world or part by any of various
subdivisions (postal codes, streets, political boundaries)
Natural and manmade features (lakes, rivers, highways, hospitals)
Almost any place with almost any kind of statistical info
HED 460
GIS
Human beings excel at pattern recognition
Much easier to see relationships in spatial or map format than in a table of rows and columns Easier to make connections
HED 460
GIS – Data visualization
Lets you visually represent the data in any field of a map file as: Different shades of color Symbols of different sizes Dot patterns of varying density
HED 460
GIS – Data analysis
Has full array of query tools More powerful than traditional
databases 3 stores – want to compare the
demographics around each to understand why two are thriving and one is not
HED 460
GIS – Data analysis
Calculate a demographic profile for all households within a 15 min. drive from each store
HED 460
GIS – Data presentation
GIS helps you communicate what you know
Makes your case with clear and compelling visuals
HED 460
GIS Application Find where your best customers are located
Company sells food products to stores, cafes, restaurants, and other outlets in your city
Marketing presentation - show the stores you sold the most products to last year
You have a database with name, street address and last year’s sales for each customer
You have street data for your city