Lecture 7
Map & Geographic Visualization
– Definition and Some Examples
– where2.0 Conference Videos
– Tools
2nd Visualization Assignment
– Tableau or Google Fusion Tables
– Tips and Resources
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Map & GeoVisualization – Definitions & Some Examples
Cartography | Cartogram | GeoVisualization
Crimespotting SF
http://sanfrancisco.crimespotting.org
Library Data: GeoLib
http://www.geolib.org/
MapAction
http://www.mapaction.org/
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where2.0 Conference
Excellent Resource
Highlighted Videos
http://en.oreilly.com/where2009/public/schedule/proceedings
– Geography of the Stimulus Package -- from Stats to Stories
– The Shape of Alpha (Flickr)
– World's Most Realistic 3D City Models?
– Indigenous Mapping: Emerging Cultures on the Geoweb
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Tools
Google Maps
–
site
Watch video: Google Maps = Google on Maps
Google Map Maker
–
Watch video: Evolving GeoWeb: Google Map Maker
Google Earth
–
site
Watch video: Indigenous Mapping: Emerging Cultures on the Geoweb
ArcGIS Explorer
–
site
site
Watch video: ArcGIS and the Web: Better Sharing of Geographic Information
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2nd Visualization Assignment
Use Tableau or Google Fusion Tables
to create a set of visualizations
– Tableau only runs on Windows
– Fusion Tables runs on Windows and Mac
Tableau Tasks
– Create a series of visualizations - 3 to 5 - and select
appropriate display types.
– Create a dashboard with the visualizations that you created.
– Data Sets: same / similar data sets as used in 1st visualization (if
rich enough) or you can select new data sets
Fusion Tables Tasks
–
–
–
–
Find interesting and unique and large data set.
Prep data set so that it can be viewed using Fusion Table.
Visualize data as a map.
Customize visualization.
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2nd Visualization – Using Tableau
Tableau only runs on Windows
– Access to full suite of tools until the end of semester
Instructions and Desktop Key will be emailed
Resources
– Beginner's Guide to Data Visualization
http://www.tableausoftware.com/beginners-data-visualization
– On-Demand Videos
– Useful resource (and tool) for Preparing Excel Files for Analysis:
– Week 5 > Resources > Tableau
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Tableau – Dimension versus Measure
Dimension
– Tableau treats any field containing qualitative, categorical information
as a dimension.
– Dimensions typically produce headers.
Measure
– Tableau treats any field containing numeric (quantitative) information as
a measure.
– Measures typically produce axes.
– Measure is a function of other Dimensions placed on the worksheet
(e.g. Sum of “Sales” for every “State”).
– Can convert Measure to Dimension (using drag & drop).
Headers
– Created when you place dimension on Rows or Columns shelf.
Axes
– Created when you place measure on Rows or Columns shelf.
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Tableau – Building Views / Visualizations
Dragging Fields
– Visualize data by dragging fields from Data window to view.
– Dimensions add headers while measures add continuous axes.
Types of Shelves
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–
–
–
Columns / Rows shelves: create rows and columns of data view.
Filter shelf: exclude data from view.
Levels of Detail shelf: show additional data.
Color / Size / Shape shelf: encode the data in various ways.
Show Me
– Suggests possible display types to use.
Map
– Columns for Longitude | Rows for Latitude.
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Fusion Tables
Fusion Tables – http://www.google.com/fusiontables/
• New Look versus Classic
• The Classic look
– These classic features are not yet available in the New look:
– Geocoding correction / KML preview
– Map charts (a Labs visualization)
– Intensity maps and heatmaps
– Comments on rows, cells, or columns
– You can use Help > Back to classic at any time.
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Fusion Tables – Demo
Fusion Tables – http://www.google.com/fusiontables/
Log into your Google Account
Click to create a Google Account if you don't already have one.
“Wikileaks Afghan War Diary, 2004-2010”
link
Click on Visualize and select Map
Select “Heat Map” and Zoom In / Out
To visualize tabular data on map in Fusion Tables, must have columns that
include location information.
Fusion Tables accepts
– latitude and longitude
(must be in decimal degrees; e.g. 40.446, -79.948)
Resources: Week 7 > Resources > Fusion Tables
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