SPATIAL OBJECTS AND SPATIAL RELATIONSHIPS-中国Betway体育网页登陆

摘要 SpatialobjectandspatialrelationshiparetwobasicconceptsofGIS.Spatialobjectisthedigitalrepresentationofgeographicalentityorphenomenon,whichformsthebasisfordatamanagementandanalysis;spatialrelationshipistheconnexionbetweenspatialobjectswhengeometricpropertiesareconsidered.Thecommonlyusedclassificationofspatialobjectsaspoints,linesandareasismathe-maticallystrict,andsuitablefordatamanagement,butabittoogeneralizedforrepresentingrealentitiesandextractingspatialrelationships.Agoodclassificationmodelshouldnotonlybegoodforrepresentingrealentities,butalsogoodforre-vealingspatialrelationships,thereforegoodforformalizingspatialanalyses.

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SPATIAL OBJECTS AND SPATIAL RELATIONSHIPS

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