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ID:36438543
大小:3.95 MB
页数:71页
时间:2019-05-10
《基于GIS二次开发的水资源决策支持系统的研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、天津大学硕士学位论文基于GIS二次开发的水资源决策支持系统的研究姓名:周小希申请学位级别:硕士专业:环境科学指导教师:谭欣20090501ABSTRACTWateristheprerequisiteforthesustainabledevelopmentofhumansociety.WiththeincreasingeconomicandsocialdevelopmentinChina,waterresourcesshortagehasbottleneckedthesustainabledevelopmentinou
2、rcountry.Itisnecessarytoimprovethemanagementanddecision-makingonwaterresourcesissuesbyadvancedtechnologyinOurcountry.Basedonthecomprehensiveanalysisofthecurrentlevelofwaterresourceadministrationandutilization,Waterresourcesdecisionsupportsystembasedonseconddeve
3、lopmentofGISwasstudiedfromthedevelopmentperspectiveinthispaper,thisexampleofsystemdevelopmentusedtheHengshuicityAplug—inapplicationframeworkofGISwasdevelopedforthesystemframework.Thesystemmainlyconsistsofdatabase,modelbaseandtextbase,Spatialanalysismoduleandthe
4、maticmapmodulewasalsoaddedtothesystem.Auser-friendlyinterfacewasalsodevelopedwithVisualC群andArcEnginethatis’acomponentlibraryofseconddevelopmentofGIS.Inthedesigningoftheplug—inapplicationframeworkofGIS,thecomponetsofthisframeworkincludingFramestructure,communic
5、ationsmode,plug··inscontainer,plug·-insacquisitionandAnalysiswereseparatelydesignedandrealized,theframeworkhavehighstrongsaclability,highreusability,theuseofsimpleandstrongmaintainability.Thedatabasemainlyincludesspatialdatabaseandpropertydatabase.Relationmodel
6、wasappliedinthedatabasedesigningprocessandtableswereconnectedwith“primarykey-foreignkey”link.Itadoptsinternationalunificationcodeandclassificationstandardtoimplementgraphicslayering.Basedoninternational,nationalandregionalcriteria,spatialinformationpropertywasc
7、oded.IntegrationmannerwasappliedforthesecondarydevelopmentofArcGIS.111efunctionshavebeenachievedasadding,modifying,cancellingandqueryingbasicspatialattributedata,zoomingin,zoomingout,movingandupdatingspatialinformation,modifying,updatingdrawingelement,andsortin
8、gpropertyinformation.ThechangingregularityandspatialdistributionofWaterresourcesinformationwaspresentedintheformofthematicmap.Forthemodelsystem,economicconditions,population
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