marrying spatialization and traditional cartography geography 200b march 12, 2003 presented by kirk...
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Marrying Spatialization and
Traditional Cartography
Marrying Spatialization and
Traditional Cartography
Geography 200B
March 12, 2003Presented by Kirk Goldsberry
Introduction
• Seek Patterns or Clusters in Seek Patterns or Clusters in UN AIDS dataUN AIDS data
• Using Multi-Dimensional Using Multi-Dimensional Scaling and Choropleth MapsScaling and Choropleth Maps
• Analyze results using GISAnalyze results using GIS• Compare Spatialized Results Compare Spatialized Results with Cartographic with Cartographic VisualizationsVisualizations
Raw Data
• UNAIDS• Global Report of June 2000• Country Wide Data• Includes about 60 attributes• Record and Attribute Reduction
Getting ready for MDS• For Each Attribute (8)
– Rank Countries 1 through 38– Rankings based on Desirability
•For example: lowest number of deaths rank = 1, highest number of deaths = 38
• Sum Rankings = total score
MDS Coordinates
• Join X,Y,Z Coordinates With Existing dbf containing refined spatial data
• Created a 3d theme in ArcView using the MDS Coordinates
• Allowed Comparisons of Spatializations and more traditional Maps
2 kinds of Visualization
• 3 Dimensional MDS sourced space
• Traditional Cartographic Maps– Choropleth– Proportional Symbol– Combinations
Evaluate Cooperation
• Goal was to investigate the cooperation of these two visualizations– Agreements– Disagreements– Does the marriage promote knowledge discovery?
Evaluate Cooperation
• Another Goal was to search for and define patterns exposed by the MDS
– Does Tobler’s First Law apply to this artificial space?
Results
• MDS and Traditional Methods Expose Similar Relationships
• MDS Exposes Strong Similarities between non-proximate entities
Inner Cluster
Conclusions
• MDS Spatialization could serve as a functional partner to traditional methods
• They work well together• Different Legitimate Patterns are exposed using both techniques
Questions or Comments