OSGeo地理空间开源基金会――关于开源GIS的介绍

OpenSourceGeographicInformationSystems2５ｔｈDecember2009ClosedSourceGISProviders➢ESRI(Arc-GIS)➢Intergraph(Geomedia)➢ClarkUniversity(IDRISI)➢PitneyBowes(MapInfo)WhatisOpenSource?➢Developersfreelyread,modify,andredistributesourcecode➢Usersfreelyuseanddistributeprograms➢Thereisnocosttoacquirethesoftwareandtherearenomaintenancefees➢TheremaybecostfortraininganddevelopmentofcustomizedapplicationsBenefitsofOpenSourceGIS➢ProvidesGISfunctionalitytopeoplewhootherwisecouldn'taffordthetools➢Providesopportunitytocustomizeforlocalneeds➢Unlimitedcopiestodesktops&servers➢DrivesindustrystandardssuchasOpenGeospatialConsortium(OGC)webservicessuchasWMS,WFS,others.OpenSourceGIS–Problems!➢Toomanychoices–agoodproblem?➢Generallylackgoodcartography,printing,robustediting➢Thereissomeriskofdevelopmentceasingforagiventool–staywiththelargertools➢Lesslocaltrainingopportunities➢Smallerlocalknowledge/userbaseinJapanMapGuideOpenSourceGRASSMapBuilder●TheFoundationprovidesforacommonumbrellatoFreeandOpenSourcesoftwareusers,developers,businessesandeducation●TheOSGeoFoundationisanon-profitorganizationfoundedin2006●CharterMembersvotedaboardofninedirectorsandpresident●SoftwareprojectsgothroughanincubationprocesssimilartothatoftheApacheFoundation●PeopleorganizeincommitteesandworkgroupscommunicatethroughseveraldozenmailinglistsandcollaborateontheWiki.●Membershipisopenandbroadlyinclusivehｔｔｐ：//ｔｔｐ：//●FOSS4G2006heldatLausanne,Switzerland●FOSS4G2007heldatVictoria,Canada●FOSS4G2008heldatCapeTown,SouthAfrica●FOSS4G2009tobeheldatSydney,Australia●FOSS4G2010tobeheldatBarcelona,Spain➢TheGeographicResourcesAnalysisSupportSystemisaGeographicInformationSystem(GIS)usedforgeospatialdatamanagementandanalysis,imageprocessing,graphics/mapsproduction,spatialmodeling,andvisualization.GRASSiscurrentlyusedinacademicandcommercialsettingsaroundtheworld,aswellasbymanygovernmentalagenciesandenvironmentalconsultingcompanies.QuantumGISorQGISQGISgvSIG●gvSIGisatoolorientedtomanagegeographicinformation.Itischaracterizedbyauser-friendlyinterface,withaquickaccesstothemostusualrasterandvectorformats.InthesameviewitincludeslocalaswellasremotedatathroughaWMS,WCSorWFSsource.DesktopMobileOSSIM–Awesomeimageprocessing➢TheOSSIMprojectprovidescrossplatform,highperformanceimageandremotesensingprocessingfortheOSGeocommunity.IncludedwiththedistributionareanumberofcommandlineandGUIapplicationsthatprovidecomplexgeo-spatialprocessing,ortho-rectification,precisionterraincorrection,mosaicking,andcrosssensorfusions.MapServer➢MapServerisanOpenSourcedevelopmentenvironmentforbuildingspatially-enabledinternetapplications.MapServerexcelsatrenderingspatialdata(maps,images,andvectordata)fortheweb.MapServerisoperatedasproductiveengineinallpartsoftheworld(ExamplesfromUNEP,Brazil,Minnesota)WebMappingMapGuideOpenSource➢MapGuideOpenSourceisaweb-basedplatformthatenablesuserstoquicklydevelopanddeploywebmappingapplicationsandgeospatialwebservices.MapGuidefeaturesaninteractiveviewer,XMLdatabaseformanagingcontent,andsupportsmostpopulargeospatialfileformats,databases,andstandards.MapGuidecanbedeployedonLinuxorWindows,supportsApacheandIISwebservers,andoffersextensivePHP,.NET,Java,andJavaScriptAPIsforapplicationdevelopment.MapGuideOpenSourceislicensedundertheLGPL.WebMappingdeegree➢deegreeisthemostsubstantialimplementationofOGC(OpenGeospatialConsortium)-andISO-standardsinthefieldofFreeSoftware.Itbuildsthefoundationfornumerousproductivecomponentsofspatialdatainfrastructures-inGermany,Europeandtheentireworld.WebMappingWebGISServer.CompatibilitywithGoogleMapsandGoogleEarthGeoServerGDAL/OGR➢isatranslatorlibraryforrastergeospatialdataformatsthatisreleasedunderanX/MITstyleOpenSourcelicense.Asalibrary,itpresentsasingleabstractdatamodeltothecallingapplicationforallsupportedformats.TherelatedOGRlibrary(whichliveswithintheGDALsourcetree)providesasimilarcapabilityforsimplefeaturesvectordata.FDODataAccessTechnologyFDODataAccessTechnologyisanAPIformanipulating,definingandanalyzinggeospatialinformationregardlessofwhereitisstored.GEOSGeometryEngineOpenSourceGEOSisaC++portoftheJavaTopologySuite(JTS).ThisincludesalltheOpenGISSimpleFeaturesforSQL“POINT(1010)LINESTRING(11,2020,3040)POLYGON((11,1020,2020,2015,11))MULTIPOINT(1010,2020)Etc…➢GeoToolsisanopensource(LGPL)Javacodelibrarywhichprovidesstandardscompliantmethodsforthemanipulationofgeospatialdata,forexampletoimplementGeographicInformationSystems(GIS).➢GeotoolsisusedbyanumberofprojectsincludingWebFeatureServers,WebMapServers,anddesktopapplicationsMetaCRS➢TheMetaCRSproject,overarchingotheropensourcegeographiccoordinatesystems(datums)andprojectionsprojects.FromtheOSGeowiki:MetaCRSisaprojectencompassingseveralprojections,andcoordinatesystemrelatedtechnologies.OurplanistotreatavarietyofcoordinatesystemactivitiesasoneProjectfromanOSGeopointofvi