representation and spatial analysis in geographic information systemsnew

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1、RepresentationandSpatialAnalysisinGeographicInformationSystemsHarveyJ.Miller*andElizabethA.Wentz***DepartmentofGeography,UniversityofUtah**DepartmentofGeography,ArizonaStateUniversityAcommonperhapsmodalrepresentationofgeographyinspatialanalysisandgeog

2、raphicinformationsystemsisnative(unexamined)objectsinteractingbasedonsimpledistanceandconnectivityrelationshipswithinanemptyEuclideanspace.Thisisonlyonepossibilityamongalargesetofgeographicrepresentationsthatcansupportquantitativeanalysis.Throughtheve

3、hicleofGIS,manyresearchersareadoptingthisrepresentationwithoutrealizingitsassumptionsoritsalternatives.Ratherthanlockingresearchersintoasinglerepresentation,GIScouldserveasatoolkitforestimatingandexploringalternativegeographicrepresentationsandtheiran

4、alyticalpossibilities.Thearticlereviewsgeographicrepresentations,theirassociatedanalyticalpossibilitiesandrelevantcomputationaltoolsinthecombinedspatialanalysisandGIScienceliteratures.Thediscussionidentifiesseveralresearchanddevelopmentfrontiers,includ

5、inganalyticalgapsincurrentGISsoftware.KeyWords:geographicinformationsystems,geographicrepresentation,spatialanalysis.commonperhapsmodalrepresentationofge-andGISisanunexploredavenueforimprovinganalyticalographyinspatialanalysis(SA)andgeographiccapabili

6、tiesofboth.Ainformationsystems(GIS)isnative(unexa-Theoriesandtechniquesforalternativegeographicmined)objectsinteractingbasedonsimpledistanceandrepresentationsandanalysesexistintheSAandge-2connectivityrelationshipswithinanemptyEuclideanographicinformat

7、ionscience(GIScience)literatures.SAplane.Thisrepresentationhasessentiallyremainedun-hasasmallbutsteadycurrentofliteratureonrepresenta-touchedsinceitsinceptionduringthebirthofquanti-tionissuesinanalysis,includingtheoriesofgeographictativegeographyandco

8、mputercartography,aneraspaceandtechniquesforestimatingdistancemetrics,characterizedbyscarcegeographicdata,weakcomputers,analyzinggeographicrelationshipsbetweenspatialob-andcrudespatialalgorithms.Itisonlyonepossibilityjects,andanalyzinggeometri