Gis

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Gis

  1. 1. Geographic Information Systems “GIS ” “ Geography Matters”
  2. 2. Think about “Geography” <ul><li>What is Geography </li></ul><ul><ul><li>The 3 “ W’s ” of Geography </li></ul></ul><ul><ul><ul><li>What is where </li></ul></ul></ul><ul><ul><ul><li>Why is it there </li></ul></ul></ul><ul><ul><ul><li>Why do I care </li></ul></ul></ul>
  3. 3. Data - Data - Data We all ‘got data’ <ul><li>Location Data – How Many – What Kind – Where </li></ul><ul><li>Scale of Data – Local to Global </li></ul><ul><li>Data Presentation </li></ul><ul><li> – Words, Charts, Graphs, Tables, or Maps </li></ul><ul><li>Exploring data using GIS turns data into information into knowledge </li></ul>
  4. 4. <ul><li>GIS is a System of computer software, hardware and data, and personnel to help manipulate, analyze and present information that is tied to a spatial location – </li></ul><ul><ul><li>spatial location – usually a geographic location </li></ul></ul><ul><ul><li>information – visualization of analysis of data </li></ul></ul><ul><ul><li>system – linking software, hardware, data </li></ul></ul><ul><ul><li>personnel – a thinking explorer who is key to the power of GIS </li></ul></ul>Geographic Information Systems A Definition of GIS
  5. 5. What is Not GIS ? <ul><li>GPS – Global Positioning System </li></ul><ul><li>A static map – paper or digital </li></ul><ul><ul><li>Maps are often a “product” of a GIS </li></ul></ul><ul><ul><li>A way to visualize the analysis </li></ul></ul><ul><li>A software package </li></ul>
  6. 6. Spatial Data <ul><li>Estimates are that 80% of all data has a spatial component </li></ul><ul><ul><li>Data from most sciences can be analyzed “spatially” </li></ul></ul>
  7. 7. What is GIS ? <ul><li>A method to visualize, manipulate, analyze, and display spatial data </li></ul><ul><li>“ Smart Maps” linking a database to the map </li></ul>
  8. 8. Database “ Not Easy to Interpret”
  9. 9. Visualization “Worth a Thousand Words”
  10. 10. Two Ways to Input and Visualize Data The World in GIS <ul><li>Raster – Grid </li></ul><ul><ul><li>“ pixels” </li></ul></ul><ul><ul><li>a location and value </li></ul></ul><ul><ul><li>Satellite images and aerial photos are already in this format </li></ul></ul><ul><li>Vector – Linear </li></ul><ul><ul><li>Points, lines & polygons </li></ul></ul><ul><ul><li>“ Features” (house, lake, etc.) </li></ul></ul><ul><ul><ul><li>Attributes </li></ul></ul></ul><ul><ul><ul><ul><li>size, type, length, etc. </li></ul></ul></ul></ul>Real world
  11. 11. Combining Data From Many Sources
  12. 12. Data For GIS Applications <ul><li>Digitized and Scanned Maps </li></ul><ul><ul><li>purchased, donated, free (Internet) </li></ul></ul><ul><ul><li>created by user </li></ul></ul><ul><li>Data Bases – Tables of data </li></ul><ul><li>GPS – Global Positioning System </li></ul><ul><ul><li>accurate locations </li></ul></ul><ul><li>Field Sampling of Attributes </li></ul><ul><li>Remote Sensing & Aerial Photography </li></ul>
  13. 13. States Five Data Layers “Alike” Features Roads Capitals Rivers Lakes
  14. 14. “ Spatial Analysis” – not just a map Turning Data Into Information
  15. 15. Asking A Question – Interaction
  16. 16. Maps and Database are “Interactive”
  17. 17. Multiple Databases can be Linked and Related
  18. 18. Some Ways GIS is Used <ul><li>Emergency Services – Fire & Police </li></ul><ul><li>Environmental – Monitoring & Modeling </li></ul><ul><li>Business – Site Location, Delivery Systems </li></ul><ul><li>Industry – Transportation, Communication, Mining, Pipelines, Healthcare </li></ul><ul><li>Government – Local, State, Federal, Military </li></ul><ul><li>Education – Research, Teaching Tool, Administration </li></ul><ul><li>Wherever Spatial Data Analysis is Needed </li></ul>
  19. 19. Network Solutions
  20. 20. Ecosystem Management
  21. 21. 3D Mine with Well Data
  22. 22. Environmental Monitoring Toxic Plume
  23. 23. Combining Various Display Methods
  24. 24. Oil Spill and Contamination
  25. 25. Site Location and Client Distance
  26. 26. Modeling of Future Trends
  27. 27. Clusters and Comparison of Data
  28. 28. Loma Linda Hospital Facilities
  29. 29. GIS on the Internet <ul><li>Olympics </li></ul><ul><li> — http://citymap.cityofsydney.nsw.gov.au/ </li></ul><ul><li>National Geographic Map Machine </li></ul><ul><li> — http://www.nationalgeographic.com/maps.index.html </li></ul><ul><li>Find a Home — http://www.realtor.com </li></ul><ul><li>ATM Locator — http://www.visa.com </li></ul><ul><li>Store Locator — http://www.godiva.com </li></ul><ul><li>GIS Info — http://www.gis.com </li></ul>

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