Google Earth and Geospatial Visualization
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Google Earth and Geospatial Visualization

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Talk on Web 2.0 mapping technologies plus comparison with GIS technology. The link at the end goes to a Google Earth demonstration found on my blog.

Talk on Web 2.0 mapping technologies plus comparison with GIS technology. The link at the end goes to a Google Earth demonstration found on my blog.
http://gisatvassar.blogspot.com/2007/10/google-earth-lunchtime-demonstration.html

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Google Earth and Geospatial Visualization Google Earth and Geospatial Visualization Presentation Transcript

  • And other virtual globes
  • Web maps and data visualization Many Eyes Gapminder World Freedom Atlas Worldmapper
  • Virtual globes Celestia World Wind ArcGIS Explorer
  • Google Earth for Environmental Managers
    • Making place marks (points, line, polygons)
    • Image overlays
    • Easy to share files (KML or KMZ)
    • Easy to use
    • Cross-platform
    • No overhead (it’s free!)
  • What is a GIS?
    • An organised collection of
      • computer hardware,
      • software,
      • geographic data,
      • procedures and
      • personnel
    • Designed to efficiently capture , store , update , manipulate , analyze , and display all forms of
    • geographically referenced information.
  • Google Earth is NOT…
    • … a true GIS because it cannot…
      • query
      • buffer
      • clip
      • do quantitative analysis
      • do cartography
  • Spatial accuracy and precision From OgleEarth blogger: There is no stated accuracy, and accuracy varies. … Of course, Google Earth is free, and good enough for most uses, and especially in the US and Europe the accuracy is high and errors negligible (< 4m)… From a Google Earth contact: Check out this Wikipedia page: http://en.wikipedia.org/wiki/Google_Earth#Resolution_and_accuracy
  • Scientific use of Google Earth
  • Do you still need your GIS skills?
    • Spatial accuracy
    • Precision
    • Metadata
    • Analyses across multiple layers
    • Cartography
    Absolutely
  • Google Earth demonstration gisatvassar.blogspot.com
  • Questions? Meg Stewart Email: stewart.meg@gmail.com Twitter: meg_stewart Skype: megstewart