ISDS Research Committee Data Visualization for Health Surveillance:
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Transcript of ISDS Research Committee Data Visualization for Health Surveillance:
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ISDS Research CommitteeData Visualization for Health Surveillance: Current Concepts and New Horizons23 September 2009
The GeoViz Toolkit:An easy-to-use approach to ESDA
Frank HardistyGeoVISTA CenterDutton e-Education InstituteDepartment of GeographyPennsylvania State University
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Multivariate Small multiples, integrated views, data reductionExploratory Foster interaction
Spatial Link the spatial and other views
Analysis Spatial structure (including cluster) detection and description
Our Approach to Multivariate Exploratory Spatial Data
Analysis
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Software – The GeoViz Toolkit
Open Source Web Delivered Video Intro
Applications (Agencies):Research (NSF)Public Health (NCI,
CDC)Public Safety (DHS)
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Multivariate Exploratory Spatial Data
Analysis
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Multivariate Data - Integrated Views – Starplots, Parallel
Coordinate Plots
Starplot Maps
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Why Starplots?
Multivariate Exploratory Mapping (Geovisualization)
Good for: a large number of attributes
Bad for: a large number of observations
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What are Starplots?
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What are Starplots?
California
New YorkKentucky
Texas
Awesome Legend
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Geography: Starplot Maps
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Data Reduction – Linkgraph, RadViz, PCA
Linkgraph
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Multivariate Exploratory Spatial Data
Analysis
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Interaction – Automatic coordination, novel highlighting
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Multivariate Exploratory Spatial Data
Analysis
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Spatial Analysis -- Clustering -- Proclude
Genetic GAM Geographical Analysis Machine (GAM)
Openshaw's GAM Case point-centered searching
(proposed by Besag and Newell) Randomized GAM (proposed by
Fotheringham and Zhan)
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Integrating Proclude and the GeoViz Toolkit
Clicking on clusters selects them in the rest of the GeoViz Toolkit
Selections in the rest of the GeoViz Toolkit will have clustering measures provided (based on the Observed/Expected ratio)
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Integrating Proclude and the GeoViz Toolkit --
Demo
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Spatial Analysis – Spatial Structure – Monte Carlo
Moran’s I
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The Future
Improved IO Save to and restore from internet Accept WMS Sources Accept PostGIS sources Better local data export
Better support for categorical and text data H1N1 data from Rhiza Labs
More spatial analysis methods
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Acknowledgements
Other Developers at Penn State GeoVISTA Center and elsewhere
NSF NCI Grant NEVAC (North-East Visualization &
Analytics Center)
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If you like this stuff
Use the software with your data Examine and adapt the source code Contact us if you need help getting
set up – we have some external funding for disease surveillance work from DHS
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Thank you!
We are looking for collaborators! Contact me at [email protected] Visit the GeoVISTA Center Website
http://www.geovista.psu.edu/