Transcript GeoSpatial Analysis (Presentation?)

GeoSpatial Analysis
UNICEF Security Advisors Workshop
20 October 2010
1. Introduction
In the last few years developments in software
such as Google Earth have created a revolution
in how geographical information can be created,
visualised, searched, displayed and shared.
These developments have been described as
Neogeography or the Geoweb.
Neogeography/Geoweb
Essentially, Neogeography is about people
using and creating their own maps, on their own
terms and by combining elements of an existing
toolset.
Neogeography is about sharing location
information-, helping shape context, and
conveying understanding through knowledge of
place (Andrew Turner, 2006).
Web based mapping libraries
Google
Bing maps
Map24
Ask Maps
NASA terra
Yahoo
MapQuest
Multimap
OpenLayers
Geocommons
Web based mapping Software
Mapping programs allow base mapping data to
be combined with your own data or data from
other sources.
The output from this combining of data are
known as mashups.
2. The basics of GE: Mapping software
Downloadable software
Web based
►Google Earth
►Bing maps 3D
►World Wind
►ArcGIS Explorer
►Google Map
►Bing Maps
►Yahoo
►Ask Maps
Google Earth uses KML files for adding data to the globe
KML = Keyhole Markup Language
Keyhole Markup Language (KML) is an XML-based language for describing threedimensional geospatial data and its display in application programs. KML was
developed for use with Google Earth, which was originally named Keyhole. It was
created by Keyhole, Inc, which was acquired by Google in 2004.
The KML file specifies a set of features (placemarks, images, polygons, 3D models, textual
descriptions, etc.) for display in Google Earth and Maps, or any other 3D geospatial
browser (geobrowser) implementing this open file format. Each place always has a
longitude and a latitude. Other data can make the view more specific, such as tilt,
heading, altitude, which together define a "camera view".
KML files are very often distributed as KMZ files, which are zipped KML files with a .kmz
extension.
Wikipedia 2007
Types of data available
Raster data (Image data)
Vector data (point, line and polygon)
►Photos - Video
►KML projects
►Live network links.
Pros and cons of GE and GM
Google Earth for:
► 3D mapping
► Displaying GPS data
► Displaying air photo and
satellite data.
► Making your own maps
► Searching for maps
► Layer
► Weather
Google Maps for:
► Street and Road mapping
► Add on application
► Publishing your own maps
► Making your own maps
► Searching for maps
► Live traffic
► Street view
3. What we can do
Create spatial data
Make maps
Visualize the world
Search for spatial data
Publish spatial data
Share and collaborate with maps
In the 5 year since GE was invented:
► Spatial imagery has become available a no cost.
► Data is now routinely publish in geographical format.
► Possible for anyone to publish to a global audience so share their
data.
► Possible to combine and compare data from multiple source.
4. Different levels of using GE
(1)Using tools within GE
(2) Importing GIS and other data using GE or
other tools
(3)Using My Maps within Google Maps in your
internet browser
(4) Using the Spreadsheet mapper tool in Google
Spreadsheets
(5) Writing KML codes from scratch
5. Today: Using tools within GE
(1)Creating a place
(2) Creating a path
(3) Creating a polygon
(4)How to manage your folders
(5) Using the tour function
Exercise: Security Briefing for Exec Dir Tony
Lake
6. Further Resources
GE help menu takes you straight to:
• Tutorials
• Help Centre Website
• User Guide
• Google Earth Community
http://earth.google.com/
http://earth.google.com/outreach