空間信息共享與互操作技術(shù)-第三講

1WMS查詢實例/cgi-bin/NWGISS/NWGISS? WMTVER=1.0.0&REQUEST=capabilitieshttp://dial.eoc.nasda.go.jp/cgi-bin/dib/wgiss? WMTVER=1.0.0&REQUEST=capabilities2WMS查詢實例/cgi-bin/NWGISS/NWGISS? WMTVER=1.1&REQUEST=map& BBOX=-120.093803%2C21.792076%2C 90.692970%2C42.964756& WIDTH=271&HEIGHT=406&SRS=EPSG%3A4326& LAYERS=mod2%3ASWATH%3A MODIS_SWATH_Type_L1B%3A Height%3A0& STYLES=Histogram+equalization%3ARainbow256& FORMAT=GIF&BGCOLOR=0xFFFFFF& TRANSPARENT=TRUE&EXCEPTIONS=XML3Capabilities.xml<?xmlversion="1.0"encoding="UTF-8"standalone="yes"?><!DOCTYPEWMT_MS_CapabilitiesSYSTEM"/wmt/xml/capabilities_1_0_3.dtd"[<!ENTITY%KnownFormats"GeoTIFF|HDFEOS|NITF|WMS_XML"><!ELEMENTHDFEOSEMPTY><!ELEMENTNITFEMPTY><!--endofDOCTYPEdeclaration-->]><WMT_MS_Capabilitiesversion="1.0.3"updateSequence="0"><Service><!--ServiceMetadatafortheserviceasawhole--><Name><!--TheWMT-definednameforthistypeofservice-->GetCoverage</Name><Title>NASAWMT2WebServer</Title><Abstract></Abstract><Keywords></Keywords><OnlineResource><!--TheURLofthisservice-->:8080/cgi-bin/dib/wcshdfeos?</OnlineResource><Fees>none</Fees><AccessConstraints>none</AccessConstraints></Service><Capability><!--Capabilitymetadata--><!--coverageandcapabiltiesrequestareavailable--><Request>

<Coverage>4實現(xiàn)技術(shù)根據(jù)國際標(biāo)準(zhǔn)WebMapServiceInterface制訂出基于Web的地圖服務(wù)規(guī)范，用GeoStar,GeoSurf,SuperMap,MapGIS,Arc/Info,MapInfo軟件上實現(xiàn)．實現(xiàn)異構(gòu)電子地圖的網(wǎng)絡(luò)共享集成以及Web服務(wù)．56(2)基于Web的地理覆蓋的服務(wù)規(guī)范在網(wǎng)絡(luò)環(huán)境下查找地理覆蓋數(shù)據(jù)（影像、DEM等）服務(wù)網(wǎng)站，發(fā)出請求，服務(wù)器將地理覆蓋數(shù)據(jù)直接傳送到客戶端。

7WebCoverageServices(WCS)Interfaces

GetCapabilitiesGetCoverageDescribeCoverageType8GetCoverageDataLayerNameFormat(HDFEOS,NITF,GEOTIFF)SpatialReferenceSystemMapBoundingBoxOtherInformation(Dimensionsubsetting, SpatialResampling)9實現(xiàn)技術(shù)根據(jù)國際標(biāo)準(zhǔn)WebCoverageServiceInterface制訂出基于Web的要素服務(wù)規(guī)范，用GeoStar等軟件實現(xiàn)．實現(xiàn)了地理覆蓋層數(shù)據(jù)的網(wǎng)絡(luò)共享與互操作以及Web服務(wù)．1011(3)基于Web的地理要素

服務(wù)規(guī)范

在網(wǎng)絡(luò)環(huán)境下查找地理要素（矢量數(shù)據(jù)庫）服務(wù)網(wǎng)站，發(fā)出請求，服務(wù)器將矢量數(shù)據(jù)轉(zhuǎn)換成GML格式數(shù)據(jù)，傳送到客戶端。需要時可進(jìn)行在線編輯。12實現(xiàn)方法

根據(jù)國際標(biāo)準(zhǔn)WebFeatureServiceInterface制訂出基于Web的要素服務(wù)規(guī)范，用GeoStar,GeoSurf,SuperMap,MapGIS,Arc/Info,MapInfo軟件實現(xiàn)．實現(xiàn)地理要素的網(wǎng)絡(luò)共享與互操作以及Web服務(wù)．

13WFSReview-Application14WFSReview–WFSinreallife151617多系統(tǒng)多標(biāo)準(zhǔn)多數(shù)據(jù)源空間數(shù)據(jù)集成18五、地理空間信息網(wǎng)絡(luò)服務(wù)技術(shù)191、地理數(shù)據(jù)服務(wù)2、地理信息處理服務(wù)3、組合服務(wù)的實現(xiàn)4、OGC基于Web的地理信息服務(wù)技術(shù)20服務(wù)代理服務(wù)請求者服務(wù)提供者2．發(fā)現(xiàn)1．發(fā)布3．綁定Web服務(wù)模型，SOA注冊、目錄管理、分發(fā)21

應(yīng)用客戶地圖查看器客戶影像利用客戶增值客戶傳感器Web客戶注冊服務(wù)發(fā)現(xiàn)客戶數(shù)據(jù)類型注冊服務(wù)類型注冊地圖符號注冊

編碼服務(wù)實例注冊GMLXIMASLD服務(wù)元數(shù)據(jù)SensorML觀測與量算影像元數(shù)據(jù)LOF數(shù)據(jù)實例注冊數(shù)據(jù)服務(wù)傳感器采集SCS矢量要素WFS柵格圖層WCS影像分析LAS處理服務(wù)服務(wù)鏈接坐標(biāo)轉(zhuǎn)換GTS地理編碼地名辭典描繪服務(wù)Web地形WTSWeb地圖WMS柵格圖描繪GPS綁定發(fā)現(xiàn)發(fā)布OGC/IP接口OpenGIS服務(wù)框架221、地理空間數(shù)據(jù)服務(wù)23WFSReview-HistoryTheWebFeatureServerhasbeendefinedwithintheOpenGISInteroperabilityProgramduringtheWMT-2Testbedin2000.TheprimarygoalwastoextendtheWMScapabilitiesofGetFeatureInfotogiveafullaccesstothevectorinformationrepresentedonmaps.Thisgoalhasbeachievedandhasbeenexceeded.AdoptedasanOpenGISimplementationspecificationinSeptember2002.24WFSReview-Definition“TheWFSspecificationdefinesawebinterfacesfordescribingdatamanipulationoperationsofgeographicfeatures”Datamanipulationoperationsincludetheabilityto:GetorQueryfeaturesbasedonspatialandnon-spatialconstraintsCreateanewfeatureinstanceDeleteafeatureinstanceUpdateafeatureinstanceWFS-T25WFSReview-DefinitionAWFSmustimplementthefollowingoperations:GetCapabilitiesDescribeFeatureTypeGetFeatureAWFSmayimplementthefollowingoperations:TransactionLockFeature26WFSReview-DefinitionThepurposeoftheDescribeFeatureTyperequestistodescribeoneormorefeaturetypesservicedbyaWFSFeatureTypesmustbedescribedusingaGML(i.e.XMLSchema)ThismeansthattheoutputofaDescribeFeatureTyperequestisanXML-SchemadocumentFeaturesmaybedescribedusingotherschemalanguagesTheidentifierforthoselanguagesmustbeadvertisedinthecapabilitiesdocument27WFSReview-DefinitionTheGetFeaturerequestisacontainerforoneormorequeryoperationsAQueryoperationsallowsfeaturesofaparticularfeaturetypetoberetrieved.AQueryiscomposedoftwosetsofelementsAlistofproperties(thedefaultistofetchallofthem)AFilter(orpredicate)thatidentifiesthesetoffeatureinstancestoretrieve28WFSReview-DefinitionTheTransactionoperationisusedtocreate,modifyanddeletefeatureinstancesTheTransactionoperationisacontainerforoneormoreInsert,UpdateandDeleteoperationsFeatureinstancesareencodedinGMLAFiltercanbeusedtodefinethescopeoftheoperation29WFSReview–WFSandGMLGML(ISO19136)istheXMLencodingofgeographicfeaturesthathasbeenselectedtobeusedbyWFS.GMLplaystwoimportantroles,encodingandmodeldefinition(troughGMLapplicationschemas)GMListheonlyencodingformataWFSMUSTsupporttobecompliant30WFSReview–WFSandGMLInnowayisittheonlyoneallowed,wehaveexamplesofWFSusingshapefiles,JavaRMI,Binaryencoding(eitherBinaryXMLoranother),…ButallofthemalsosupportGMLforrealinteroperability.WFSmigrationtoGML3willrequirethedefinitionofaProfileandanApplicationSchemaforWFS.31WFSReview-Application32WFSReview–WFSinreallife33343536全國1:100萬基礎(chǔ)地理數(shù)據(jù)在線共享服務(wù)3738392、地理信息處理功能服務(wù)

401、服務(wù)內(nèi)容

－地理信息人機(jī)交互服務(wù)－地理模型/信息管理服務(wù)－地理工作流/任務(wù)管理服務(wù)－地理信息處理服務(wù)－地理信息處理服務(wù)－空間處理－地理信息處理服務(wù)－專題處理－地理信息處理服務(wù)－時間處理－地理信息處理服務(wù)－元數(shù)據(jù)處理－地理信息通訊服務(wù)－地理信息系統(tǒng)管理服務(wù)411）地理信息人機(jī)交互服務(wù)

目錄瀏覽器地理信息瀏覽器

地理信息電子表格瀏覽器服務(wù)編輯器鏈定義編輯器

工作流制定管理器

地理要素編輯器

地理要素符號編輯器

要素綜合編輯器

地理數(shù)據(jù)－結(jié)構(gòu)瀏覽器

422）地理信息模型／信息管理服務(wù)

要素訪問服務(wù)

地圖訪問服務(wù)覆蓋訪問服務(wù)

覆蓋訪問服務(wù)