简介:阐述了传统GIS系统的不足及IntranetGIS系统的特点与组成内容,介绍了IntranetGIS系统建造时应注意的问题,同时提出了解决思路。
简介:Inordertosetupaconceptualdatamodelthatreflectstherealworldasaccuratelyaspossible,thispaperfirstlyreviewsandanalyzesthedisadvantagesofpreviousconceptualdatamodelsusedbytraditionalGISinsimulatinggeographicspace,givesanewexplanationtogeographicspaceandanalyzesitsvariousessentialcharacteristics.Finally,thispaperproposesseveraldetailedkeypointsfordesigninganewtypeofGISdatamodelandgivesasimpleholisticGISdatamodel.
简介:ThedevelopmentofInternetprovidesconvenientenvironmentforinformationsearchingandbrowsing.Italsoofferssanewplatformforgeographicinformationprocessingandanalysis.ThispaperdiscussesorganizationandprocessingapproachtoInternetgeographicinformation,andprovidesanewmethodtocross-platformanddistributedgeographicinformationanditssoftwareimplementation.Theexampieisusedtoshowthepracticalityandsuperiorityofthismethod
简介:ThisworkhasoriginallybeendoneintheP.R.China(WuhanTechnicalUniversityofSurveyingandMapping)andinHongKong(ChineseUniversityofHongKong).Prof.LinHuigaveusefuladvice.Mr.HanHaiyang,andMs.ChenLilihelpedworkwiththeimplementationofprototypesystem.WealsothanktheSwissNationalScienceFoundationforitsfinancialsupportandacknowledgethecommentsofDr.AndreasGeppertandProf.KlausR.Dittrichonanearlierversionofthispaper.