A.M. MacEachren and C.A. Brewer and L.W. Pickle.
Visualizing Georeferenced Data: Representing Reliability of Health Statistics.
In Environment and Planning A, vol. 30, no. 9, pp. 1547--1561, 1997.

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Abstract:

The power of human vision to synthesize information and recognize pattern is fundamental to the success of visualization as a scientific method. This same power can mislead investigators who use visualization to explore georeferenced data-if data reliability is not addressed directly in the visualization process. Here, we apply an integrated cognitive-semiotic approach to devise and test three methods for depicting reliability of georeferenced health data. The first method makes use of adjacent maps, one for data and one for reliability. This form of paired representation is compared to two methods in which data and reliability are spatially coincident (on a single map). A novel method for coincident visually separable depiction of data and data reliability on mortality maps (using a color fill to represent data and a texture overlay to represent reliability) is found to be effective in allowing map users to recognize unreliable data without interfering with their ability to notice clusters and characterize patterns in mortality rates. A coincident visually integral depiction (using color characteristics to represent both data and reliability) is found to inhibit perception of clusters that contain some enumeration units with unreliable data, and to make it difficult for users to consider data and reliability independently.

Bibtex:

@Article{        maceachren:1997:VGRD,
  author = 	 {A.M. MacEachren and C.A. Brewer and L.W. Pickle},
  title = 	 {Visualizing Georeferenced Data: Representing
                  Reliability of Health Statistics},
  journal = 	 {Environment and Planning A},
  year = 	 {1997},
  volume = 	 {30},
  number = 	 {9},
  pages = 	 {1547--1561},
}

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References:


Berlin B. Kay P, 1969 Bnsic Color Ternls: Thrir Universality and Evolution (University of California Press, Berkeley, CA)
Bertin J. 1981Graj?hicsand Graphic.I~zj'ormationProcessing (Walter de Gruyter. Berlin)
Bertin J. 1983 Seniiology of Graphics: Diagrams, Networks, Mups (University of Wisconsin Press,Madison, W I )
Blot W J. Fraumeni J F J, 1976,"Geographic patterns of lung cancer: industrial correlations" Atrrc~ricvr~Jlourrltrl of Epidemiology 103 539- 550
Blot W J, Harrington J M,Toledo A. Hoover R. Heath C W, Fraumeni J F J, 1978,"Lung cancer after employment in hipyards during World War 11" New Englnnd Journal oj'Medicine 299 620 - 624
Boynton R M. Fargo L. Olson C X, Smallman H S. 1989,"Category effects in color mernory" Color Rc~.\c~rrrcrrl~tld Application 14(5)229- 234
Brewer C A, 1994,"Color use guidelines for mapping and visualization", in 15~ualizutionin Modern Crrt~togrtrphjE* ds A M MacEachren, D R F Taylor (Pergamon. Oxford) pp 123- 147
Brewer C A, MacEachren A M, Pickle L W, Herrmann D J, 1997."Mapping mortality: selecting hues and evaluating color schemes" Annuls oj'the Associ(~tioro~j'Americurr Geogrupkers 87 411- 438
Carr D B. Olsen A R. White D. 1992."Hexagon mosaic maps for display of univariate and bivariate geographical data" Curtogrtrpkj,and Geogruphic bzfi1rmatior2Sv.ste111.s19(4)228 - 236
Carswell C M. Wickens C D, 1990,"The perceptual interaction ofgraphical attributes: configurality, ti~nulushomogeneity. and object integration" Perccytion and P.sychopl~ysic*4.r7 157- 168
Croner C M, Pickle L W,Wolf D R,White A A, 1992,"A GIs approach to hypothesis generation in epidemiology", in ASPRSIACSMIRT '92American Society for Photogrammetry and Remote sensing, ~ A lCshurch,VA; American Congress on Surveying and ~ a p ~ i~net~he,sdaM, D, pp 275-283
Diehr P. 1984,.'Small area statistics: large statistical problems" Alrlrrican Journal ofPuhlic Hrc,lth 74 313314
Dorling D, 1996,"Area cartograms: their use and creation", School of Environmental Sciences.University of East Anglia. Norwich, Norfolk
Evans B. 1997,"Cartographic representation of reliability, does it benefit the user?" Co~nputerusnd Geo.rc~tence23 409- 422
Goodchild M. Chih-Chang L, Leung Y, 1994,"Visualizing fuzzy maps", in Vi.snrrlizotionin Grogrcrpkiccrl Infi1rtl1ationS?:rtt~rri.Erds H Hearnshaw, D Unwin (John Wiley, Chichester,Sussex) pp 158- 167
Granger G W. 1955.'An experimental study of colour preferences.'Journrrl of General P.sychology 52 3-20
Jones K. Kirby A, 1980."The use of chi-square maps in the analysis of census data" Geofijrurii 11409- 417
Lewandowsky S, Behrens J T, Pickle L W, Herrmann D J,White A, 1995,"Perception of clusters in mortality maps: representing magnitude and statistical reliability", in Cognitive Aspoc.t.rof Sttrti.stic~olhfirpping Eds L W Pickle, D J Herrmann (Centers for Disease Control, National Center for Health Statistics, Washington. DC) pp 107- 132
MacEachren A M, 1992."Visualizing uncertain information" Cartograpllic Pc,rsprctive.~13 10- 19 MacEachren A M, 1995 Ho11.Maps Work: Ri~pre.rentationV, isualizorion ond Design (Guilford Press.New York)
MacEachren A M. Ganter J H, 1990."A pattern identification approach to cartographic visualization" Cirrtograpliicvr 27(2) 64- 81
MacEachren A M. Howard D, von Wyss M, Askov D,TaorminoT, 1993,"Visualizing the health of Chesapeake Bay: an uncertain endeavor", in proceeding.^, GIS/LIS W American Society for Photogrammetry and Remote Sensing, Falls Church,V A; American Congress on Surveying and Mapping, Bethesda, MD. pp 449-458
McGranaghan M. 1993,"A cartographic view of spatial data quality" Cartogrorpliica 30(213) 8 - 19 Makuc D, Haglund B, lngram D D, Kleinman J C, Feldman J J, 1991Heolth Servic,e ,4rea.rjbr the L'i~itctlStirte.(~Vital and Health Statistics, National Center for Health Statistics. Washington,DC)
Mason T J, McKay F W, Hoover R, Blot W J, Fraumeni J F J. 1975 Ar1t1.s qrCaricer Morrolih for CIS Cb~rrlti~1.9~5:0 - 1969 (US Government Printing Office. Washington, DC)
Olson J. Brewer C A. 1997,"An evaluation of color selections to accommodate map users with color-visionimpairments"Aiino1.rof111A~.r.r~ciirtio~qnfAmericangeographer.^87103-134
Pickle L W. Herrmann D J (Eds), 1995 Cognirive A.rpc.ct.~qfStati.rtical Mapping WP18, Cognitive Methods Staff, Office of Research and Methodology, Centers for Disease Control and Prevention and National Center for Health Statistics, Washington, D C
Pickle L W.White A. 1995,"Effects of the choice of age-adjustment method on maps of death rates" Sttrri.stic,.sinMetiicirie14615- 627
Pickle L W. Mason T J. Howard N. Hoover R, Fraumeni J F J. 1987 Atlirs o f l S Canc,c,rMortalir~. Ar~ior?gWliites:1950- 1980 (USGovernment Printing Oflice, Washington, DC)
Pickle L W, Mason T J, Howard N, Hoover R, Fraumeni J F J. 1990 Atlas oj ' [IS C a n c ~ rMortality Arrrorig Nonil~llite.1~:9 5 0 I980 (US Government Printing Oflice. Washington. DC)
Pickle L W, Mungiole M, Jones G K, White A A. 1997 Atlas qf llnited States hfortoliry (Public Health Service, Hyattsville, MD)
Pomerantz J R. 1985,"Perceptual organization in information processing", in 1ssue.r in Cogniri~.~ Motit>//hlgEds A M Aitkenhead. J M Slack (Lawrence Erlbaum Associates. London) pp 125- 158
Regan B C. Reflin J P. Mollon J D, 1994,"Luminance noise and the rapid determination of discrimination ellipses in colour deficiency" Vi.~ioriRescwrch 34 1279- 1299
Travis D. 1991Eff>i,tiveColor Displujs: Tl~eor)il,nd Prcrctict (Academic Press, San Diego, CA) van der We1 F J M, Hootsman R M, Ormeling F, 1994. "Visualization of data quality", in Vi.su~~lizolioirni Mociern Cortogrnrphy Eds A M MacEachren, D R F Taylor (Pergamon, Oxford) pp 313332
Whitfield T W A, WiltshireT J. 1990,"Color psychology: a critical review" genetic^, Social, aritl Gcri~rirlP.r:r.c~liologMynnogruph.r116(4)387-411
Winn D M. Blot W J, Shy C M. Pickle L W. Roledo A, Fraumeni J F J, 1981,"Snuff dipping and oral cancer among women in the southern United States" Nc>lvEiiglirnd Jourrlolqf Medicine 304 745- 749