Notes
Slide Show
Outline
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GIS
for
“Decision Makers”

January 26, 2007
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What is GIS?
  • Basic Terms and Concepts
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What is GIS?
  • GIS is the hardware, software, and methods that allow people to create, store, analyze, output, and distribute spatial information.
  • And...
  • A GIS is a spatial data management tool made up of “intelligent” computer maps linked to databases that describe the map features.
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GIS Functions
  • Create/input data
  • Modify data
  • Store data
  • Analyze data
  • Output information
  • Distribute data and information
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"As one of the earliest..."
  • As one of the earliest recorded uses of GIS techniques, in what decade did Dr. John Snow analyze geographic data to determine the source of an epidemic?
    • -70’s
    • -60’s
    • -50’s
    • -40’s
    • -30’s
    • -20’s
    • -10’s
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"Dr"
  • Dr. John Snow analyzed geographic data to identify the source of a city-wide cholera epidemic.
    • -70’s
    • -60’s
    • -50’s
    • -40’s
    • -30’s
    • -20’s
    • -10’s
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GIS Components
  • Basemap


  • “Your data”


  • Analysis Methods and Tools
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BASEMAP
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Map Layering Concept
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Typical Basemap Features:







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Map Projections
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Digital Orthophotography
  • Definition:
  • A digital (electronic) aerial photograph that has been modified to remove artifacts from the camera & airplane and adjusted to fit the ground surface.
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Combination of Pictures and Linework
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“YOUR” DATA
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Your Data Can Be:
  • Point data
    • Anything that can be pin pointed on a map i.e. customers, community assets, REALTOR.® listings, etc.
  • Aggregated data
    • Point data can be aggregated by any geography i.e. census block, city boundary, MIBOR Service Area, etc.
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Spatial Data Can Be Points, Lines and Areas
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The Database And Graphics Are Linked By A Unique Number
  • People can find target data with database queries such as “greater than”, “less than”, “sounds like”, “before”, etc.


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Analysis Methods and Tools
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Query By Geography
  • Allows you to ask questions about how data relate to other data.
    • What is the average distance of settlements from navigable rivers?
    • What is the population density inside a boundary?
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Simple GIS Analysis
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"Local Examples of GIS Usage"
  • Local Examples of GIS Usage
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The MIBOR MLS Is:
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Summary
  • MIBOR MLS contains most detailed local data for Central Indiana.  Can this assimilation of information be leveraged?
  • What data in addition to what you have seen are key for economic development?
  • What applications in addition to what you have seen are key for economic development?



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G.I.S. in Public Safety
  • Quickly Find Addresses
  • Interface with your 911 or CAD
  • Locate wireless callers
  • Determine responding agency
  • Longitude/Latitude coordinates
  • Background aerial photography
  • Find anything
  • GPS Interface
  • Automatic Vehicle Locating (AVL)
  • Automatic Popup map in vehicle
  • Fire Hydrants
  • Secure
  • Pre-planning
  • Tactical Mapping
  • Pin Mapping
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Hazard Mitigation
  • DMA 2000 requires every county in US to create a plan
  • FEMA has developed HAZUS-MH (Disaster Modeling Tool)
  • Polis has worked with half of Indiana’s Counties to develop their plans.
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Model
  • “The best model gives you an understanding of what you want to find out”


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 Indy Site Finder
  • http://www6.indygov.org/gis/


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Conclusions and Final Questions