MapX培训教程PPT课件

.,MapX培训教程,.,今天的内容,MapX概述MapX基本概念(Map/Layer/Tools)图层集(Layers)工具集(Tools)SelectionsandFeatures,.,查找(Find)数据集(DataSets)专题图(Themes)对象编辑(ObjectEditing)地图输出(ExportingMaps),今天的内容,.,1MapX概述,.,什么是MapX?,MapX是MapInfo公司的地图化的ActiveX,在使用面向对象语言（如：VB,VC+,Delphi,PB）开发的应用中嵌入MapX可以使您的应用具有强大的地图功能。MapX提供了各种属性、方法和事件，实现对地图数据的各种操作。,.,Buzzwords,MapX,Method,ComponentBasedProgramming,Properties,ObjectOriented,Object,Collection,Events,DataBinding,ActiveX,GeoSet,GPS,.,Object基本术语,对象Object-Athing.Something.Anything.属性Property-Anadjectivethatdescribesanobject.方法Method-Anactionthatanobjectcando.集合Collection-Agroupofsimilarobjects.事件Event-Areactionanobjectmakestocertainstimuli.,ObjectQuickview,Note:ThisisNOTtheentireobjectdiagram,.,2MapX基本概念,地图对象Map,所有对象的基础EverythingisoffofthisobjectMapsarethebasicbuildingblocksforMapX.Eachmapisdefinedby(atminimum)aLayerscollection,.,地图对象属性(MapProperties),AnnotationsAreaUnitAutoRedrawBoundsCenterXCenterYCurrentToolDataSetDataSetGeoFieldDataSetsDataSetThemeDefaultStyleDisplayCoordSysDefaultConversionResolution,ExportSelectionFeatureFactoryGeoDictionaryGeosetGeosetsGeoSetWidthhWndLayersMapPaperHeightMapPaperWidthMapUnitMaxSearchTime,MousePointerNumericCoordSysPaperUnitPreferCompactLegendsRotationSelectionStyleTitleTitleTextVersionZoom,LotstoChooseFrom!,.,CenterX,CenterY,Zoom,控制地图显示的三个要素ControlswhatpartofthemapisshowingCenterX=Longitude(Xcoord)CenterY=Latitude(Ycoord)Zoom=Howmanymiles(km,ft,etc)arebeingdisplayedacrossthemap,X,Y,.,CurrentTool当前工具,Setswhattooltheuserhasintheirhands预定义工具Manypre-definedtools,including:ZoomIn/OutLabelRadiusSelectPanTool自定义工具Youalsohavetheabilitytocreatecustomdefinedtools,.,MapXMethods,AboutBoxClipLineClipLineVConvertCoordConvertCoordVCreateCustomToolDistance,ExportMapIsPointVisiblePrintMapPropertyPageRefreshSetSizeZoomTo,METHODS,.,ConvertCoord,Convertbetweenscreencoordinatesandgeographiccoordinates(eitherdirection)UsefulfordealingwithMouse_Moveevents,METHODS,.,Distance,Computesdistancegiventwopairsofgeographiccoordinates,METHODS,.,ZoomTo,SetstheCenterX,CenterYandZoompropertieswithonemethod,METHODS,.,MapX事件（Events）,AnnotationAddedAnnotationChangedClickDataMismatchDrawUserLayerErrorMapViewChangedMouseDownThemeModifyRequested,MouseMoveMouseUpPolyToolUsedRequestDataResolveDataBindSelectionChangedToolUsed,EVENTS,MapInfoterminologyupdate,.,Annotations,AcollectionoftextandsymbolsSitontopofalllayersSimilartoamapscosmeticlayerinMapInfoProfessional,.,Geosets,.,GeoSet,AcollectionofLayersandsettingsforeachlayerSimilartoaMapInfoProworkspaceMapXincludesGeosetManager.exeutilitytomanipulategeosets,.,WhatisaGeoset?,描述地图属性的文本文件类似于MapInfoProworkspace在geoset中设置每一层地图的属性Throughtagsin*.gstfileIfatagisabsent,MapXusesdefaultvalueLookinMapXhelpforlistofallavailabletags,.,Geoset,!GEOSET!VERSION100begin_metadataGEOSETNAME=”SalesAreaGEOSETCENTER=137.69,38.256GEOSETZOOMLEVEL=1800GEOSETPROJECTION=1,0TABLERegions.tabFILE=Regions.tabTABLERegions.tabISVISIBLE=TRUETABLERegions.tabAUTOLABEL=TRUETABLERegions.tabZOOMMIN=300TABLERegions.tabZOOMMAX=800TABLERegions.tabDISPLAYPENLINESTYLE=2TABLERegions.tabDISPLAYPENLINEWIDTH=1TABLERegions.tabDISPLAYPENCOLOR=16711680end_metadata,.,创建/编辑GeoSets,UseGeosetManager.exeMakesuretogiveeachgeosetauniquename,.,ChangingGeosets,AtDesignTime(PropertyPage)Map1.Geoset=“UnitedStates”*.gstmustbeinsamedirectoryasGeoDictionarym_ctrlMapX.SetGeoset(“us.gst”)Map1.Layers(1).LoadGeosetLayers(“us.gst”)DuringAutomatching,.,GeoDictionary,.,GeoDictionary,SeehelptopicinMapX3.5Containslistofregisteredtablestouseduringautomaticdatabinding(automatching).Map.GeoDictionary=“GeoDictionary”HKEY_LOCAL_MACHINESoftwareMapInfoMapX3.0GeoDictionary=“c:programfilesmapinfomapxmapsgeodict.dct”,.,GeoDictionaryContents,ForeachregisteredfileUserfriendlynameListofindexedfieldsRefiningtablenameListofGeosetfilenames,.,Migm30.exe(GeodictionaryManager),.,CommandLineParameters,Usefulforregisteringtablesduringaninstallprogrammigm30.exetablepath|geosetpath|tablepath/geoset=geosetfile/file=commandfilepath/remove,.,CommandLineParameters,SeehelptopicinMapX3.5!,.,Sample2,Annotations,Add,ModifyandRemoveChangeMapView-MapobjectpropertiesandmethodsLoadGeoset-switchbetweendifferentgeosets,.,3图层对象（Layers）,Layers,AcollectionofLayerObjectsMuchliketransparenciesonanoverheadEachlayerhasitsownattributesLabelsZoomLayeringStyleOverrideVisibilitySelectablility,.,Regions,Lines,Points,Text,PacificOcean,LayersMethods,AddAddaMapInfomaplayertothelayerscollectionRemoveRemovesalayerfromthecollectionMoveRepositionsalayerwithinthecollection,LayersMethods,CreateLayerCreateanewMapInfotableandaddittomapLayersDlgDisplaysabuilt-in“LayerControl”dialogtomanipulatethelayers,Sample3,LayerControlDialogModifypartofpropertiesofaLayerAddaUserDrawLayer,.,4UserTools,.,ToolUsed,AneventthatisfiredafterauserreleasesthemousebuttonfromatoolsuseYoucanfindoutinformationsuchas:WhattoolwasusedWhereuserclickedmousebuttonWhereuserreleasedmousebuttonDistancebetweenpoints,EVENTS,Sample4,MorestandardselecttoolsAcustomtooltoshowtheX-Ycoordinateofthecursor,.,5SelectionsandFeatures,Selections,AcollectionofFeatureobjectsCreated:WhenuserclickswithaselectiontoolBymeansofthevariousselectmethodsMapXautomaticallyhighlightsallselectedfeaturesEachlayerobjecthasitsownSelectioncollection,FeaturesCollection,AcollectionofFeatureobjects,createdbymethodsofthefeaturesobjectSimilartotheselectionobject,except:Thefeaturesdonotgethigh-litEachlayerobjectmayhavemultiplefeaturescollections,SelectAllClearSelectionSelectByPointSelectByRadiusSelectByRectangleSelectByRegion,AllFeaturesNoFeaturesSearchAtPointSearchWithinDistanceSearchWithinRectangleSearchWithinFeature,SelectionMethods,FeatureMethods,Feature/SelectionMethods,Sample5,SearchWithinDistanceSearchWithinFeature-SearchDealersexampleSelectByRectangleSelectByRegion,.,6Find,Find,FindallowsyoutolocateitemsonamapThelayeryouaresearchingmusthaveanindexedcolumninorderforyoutoutilizethefindmethod,FindTerminology,FindFeatureObjectisreturnedbythesearchmethodofthefindobjectARefiningBoundaryisusedtodistinguishbetweenmultiplefeatureswiththesamenameResultCodesprovideinformationontheFindObject,Sample6,AFindexaple-FinddealerswithinDistancennnofacityofastate,.,7Datasets,.,DataBinding,.,DataBinding,DataBinding,AwayoftyingdatafromanexternalsourcetothemapCreatesaDATASETwhendataisboundtoaMapXmaplayerWhy?ThememapsQueryinformationSummarizationofdatageographically,DataTypesYouMayUse,DataAccessObjectRecordset(DAO)OpenDataBaseConnectivity(ODBC)datasourceLotusNotesDelphiNativeDataSourceVBDataControl&RemoteDataControlMapInfoTable,.,DataBinding,Whenmatchingrecordsinthedatabasewithfeaturesonthemap,youmayspecifythematchorletMapXchooseusingtheGeoDictionaryGeodictionary-Maintainsinformationaboutmaplayersandtheirreferencingcapabilities,.,OR,DataBinding,.,ThreeTypesofDatabinding,NormalBinddatatoexistingmapfeaturesXYBindRequiresuseofBindLayerobjectCreatessymbolsontheflyfromlong/latcoordinatesalreadyinyourdatabasePointRefRequiresuseofBindLayerobjectCreatessymbolsontheflybymatchinggeographicinformationinyourdatabaseagainstfeaturesonanexistingmaplayer,BindLayerObject,UsedasaparametertotheDatasets.addmethodSpecifieshowtocreatenewsymbolsfromyourdataMustbeabletogeo-referencedataNeedsLongitudeandLatitudeORAfieldthatcanbematchedupagainstamaplayer(zipcode,city,district,etc),.,BindLayerObjectProperties,CoordSysFileSpecKeyLengthLayerNameLayerTypeRefColumn1RefColumn2ReferenceLayer,.,CachedDataBinding,AggregationdonebyMapXDatacachedbyMapXInitialloadtimeonDatasets.AddFastredraw&thematicsBogsdownforverylargedatasets,.,“Normal”DataBinding,DatasourceFieldsaggregatedandattachedtoanexistingmaplayerYoucanspecifyKeyFieldand/orLayerORMapXcandetermineKeyFieldand/orLayer,.,X-YDataBinding,DatasourcealreadycontainsX&YcoordinatesYouspecifyX,YandKeyFieldsviaBindLayerobjectNewpointlayeriscreatedRemainingdatasourcefieldsareboundtothenewlayerasadataset,.,PointReferenceBinding,DatasourcecontainsgeographickeysuchaszipcodeYouspecifykeyFieldandReferencelayerviaBindLayerobjectNewpointlayeriscreatedwithapointforeachrowinthedatasourceRemainingdatasourcefieldsareboundtothenewlayerasadataset,.,DynamicDataBinding,AggregationdonebyDatasourceDatafetchedwhenneededbyMapXNoinitialwaitonDatasets.AddRedrawspeeddependantonDatasourcespeedDataisrequestedbyGeographicKeyCanhandleverylargedatasetsXYandPointreferencebindsarenotsupported,.,CustomDatasetTypes,COMBasedStandardextensiblearchitectureInstall,Register,andGoDocumentedinHelpFileExamplesNotesODBCDelphi,.,DataBindingDemo,DynamicvsNormalX-YandPointRefUsesODBCDatasetC+codesamples(usesC+wrappers),Sample7,5examplesofDataBindingofdatatype:DAO,ODBC,SetLayer,GlobalHandle,andUnboundAndofbindingtypeofnormal,X-Ypoint,andpointreference,.,8Themes,专题图（Themes）,Thematicmappingistheprocessofshadingyourmapbasedonyourdata.AvaluabledatavisualizationtoolManyexamplesHighIncomeareasPopulationDistributionRainfallmapsSalesdistributionmaps,TypesofThemes,RangesPieChartBarChartGraduatedSymbolDotDensityIndividualValue,Thesethemesmaybe“layered”ontopofoneanother,.,CreatingThemes,AThemehangsoffofadatasetintheobjectmodelYouaddathemetoadataset,ManipulatingaTheme,ThemeDlgmethodModifytheThemePropertiesobject,ModifyThemeDialogsincludedwithMapX,Legend,ThekeytounderstandingathemeTellswhateachstyleonthemapmeansdata-wiseYoumaymodifytheLegendbyUsingtheLegendDlgmethod(easiest)ModifyingeachLegendTextobjectindividuallyModifyingtheLegendTitleandSubTitle,.,ModifyLegendDialog,.,Timetoseethisstuffinaction,MoreoftheVBsampleapp,showing:AddingDatasetsUsingaBindLayerobjectCreatingaTheme,.,Sample8,Exampleofthemetypes:RangedBarChartPieCharGraduatedSymbolDotDensityIndividualValue,.,9ObjectEditing,.,FeatureFactory,Anobjectoffofthemapobjectthatallowsyoutodo:FeatureCreationFeatureManipulation,.,FeatureFactoryMethods,BufferFeaturesCombineFeaturesCreateArcCreateCircularRegionCreateEllipticalRegionCreateLineCreateRegion,CreateSymbolCreateTextEraseFeatureIntersectFeaturesIntersectionPointsIntersectionTest,.,BufferFeatures,Returnsafeat