Linked Micromap Plots – In Print i And A On O The Web Jürgen g Symanzik y Utah State University, Logan, UT, USA e-mail: symanzik@math.usu.edu WWW: http://www.math.usu.edu/~symanzik Contents Background  Micromaps for Birth Defects Data  Regional Micromaps  Micromaps via NCI Java Code  – Cancer C Mi Micromaps – West Nile Virus Micromaps – Current C Developments D l  Some Concluding Examples and Comments Micromaps    Link i k off rowrow-labeled l b l d univariate i i (or ( multivariate) l i i ) statistical i i l summaries to corresponding geographical region Focus on statistical display and not on maps Useful for – environmental data – agricultural data – medical data – economical data History of Micromaps  First presented at 1995 American Statistical Association’s annual meeting (Olsen, Carr, Courbois, Pierson) Pi )  Initial references: – Carr, Pierson (1996) Emphasizing Statistical Summaries …with Micromaps, SCSG*, Vol.7, No.3 – Carr, Olsen, Courbois, Pierson, Carr (1998) Linked Micromap Plots …, SCSG, Vol. 9, No.1 *Statistical Computing & Statistical Graphics Newsletter: http://www--stat.stanford.edu/~susan/scgn/ http://www Choropleth Maps vs Micromaps (1) Choropleth Maps vs Micromaps (2) Oral Cleft Micromap Example: USA Oral Cleft Micromap Example: Utah Regional Micromap Mi Example: France Region g Regional Micromap Mi Example: France Departement p Micromaps at NCI National Cancer Institute (NCI)  http://www.statecancerprofiles.cancer.gov/ http://www statecancerprofiles cancer gov/ micromaps  Released R l d in i April A il 2003  Cancer statistics:  – Mortality and incidence counts and rates – Trends by sex and race/ethnicity Fully interactive  Extensive usability testing  Wang, Chen, Carr, Bell, Pickle (2002): Geographic Statistics Visualization: WebWeb-based Linked Micromap Plots, Computing in Science & Engineering 4(3):90 4(3):90--94. Micromaps for the Display of W t Nil West Nile Vi Virus (WNV) D Data t West Nile Virus (WNV) ??? – Introduced to the US in 1999 – Spread across North America in 5 years – Initial event - Culex mosquito i transmits i virus i within avian populations – Bridging B id i Aedes A d albopictus lb i t transmits virus from birds to animals and humans From 2002 CDC Web Page to Micromaps From 2003 CDC Web Page to Micromaps Web--Based Access to WNV Data Web  Work at Utah State University y ((USU): ) – Obtained NCI Java code for Web Web--based WNV micromaps – Upgrades made for the display of WNV data  http://webcat.gis.usu.edu:8080/index.html Ongoing Work Linking of West Nile Micromap Server with i h USU Cli Climate D Data B Base  Extension of Micromap Server with  – Inclusion I l i off Point P i Data D Sources S – Displays for Climate Data Micromaps with Time Series for Point Sources Some Nice Examples (1) Some Nice Examples (2) Most Recent Examples (1) Most Recent Examples (2) Concluding Remarks Micromaps useful to display spatially complex data from environmental, agricultural, medical, economical sources, etc.  Regional similarities quickly observed  Easily understood by general audiences, such as “everyday” Web users and employees in government agencies and medical fields   References: Symanzik, J., Gebreab, Symanzik, Gebreab, S., Gillies, Gillies, R. Wilson, J. (2003): Visualizing th S the Spread d off W Westt Nil Nile Vi Virus, 2003 P Proceedings Proceedings, di , American A i Statistical Association, Alexandria, Virginia, CD . Gebreab, S. Gebreab, S Y Y., Gillies Gillies,, R. R R R., Munger Munger,, R. R G G., Symanzik Symanzik,, J. J (2008): Visualization and Interpretation of Birth Defects Data Using Linked Micromap Plots, Birth Defects Research (Part A): Clinical Teratology, gy, Vol. 82, 110 110--119. and Molecular Teratology Symanzik, J., Carr, D. B. (2008): Interactive Linked Symanzik, Micromap Plots for the Display of Geographically Referenced Statistical Data, In: In: Chen, C., Härdle, Härdle, W., Unwin,, A. (Eds Unwin (Eds.), .), Handbook of Data Visualization, Visualization, Springer,, Berlin/Heidelberg, 267 Springer 267--294.  Forthcoming Book: Questions Q i ???