MapX培训教程PPT课件

1、.,1,MapX培训教程,.,2,今天的内容,MapX概述 MapX 基本概念 (Map/Layer/Tools) 图层集(Layers) 工具集(Tools) Selections and Features,.,3,查找 (Find) 数据集(DataSets) 专题图(Themes) 对象编辑(Object Editing) 地图输出(Exporting Maps),今天的内容,.,4,1 MapX概述,.,5,什么是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

2、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。,.,6,Buzzwords,MapX,Method,Component Based Programming,Properties,Object Oriented,Object,Collection,Events,DataBinding,ActiveX,GeoSet,GPS,.,7,Object 基本术语,对象Object - A thing. Something. Anything. 属性Property - An adjective that describes an object. 方法Method - An

3、 action that an object can do. 集合Collection - A group of similar objects. 事件Event - A reaction an object makes to certain stimuli.,8,Object Quickview,Note: This is NOT the entire object diagram,.,9,2 MapX 基本概念,10,地图对象Map,所有对象的基础 Everything is off of this object Maps are the basic building blocks for

4、 MapX. Each map is defined by (at minimum) a Layers collection,.,11,地图对象属性(Map Properties),Annotations AreaUnit AutoRedraw Bounds CenterX CenterY CurrentTool DataSet DataSetGeoField DataSets DataSetTheme DefaultStyle DisplayCoordSys DefaultConversionResolution,ExportSelection FeatureFactory GeoDicti

5、onary Geoset Geosets GeoSetWidth hWnd Layers MapPaperHeight MapPaperWidth MapUnit MaxSearchTime,MousePointer NumericCoordSys PaperUnit PreferCompactLegends Rotation SelectionStyle Title TitleText Version Zoom,Lots to Choose From!,.,12,CenterX, CenterY, Zoom,控制地图显示的三个要素 Controls what part of the map

6、is showing CenterX = Longitude (X coord) CenterY = Latitude (Ycoord) Zoom = How many miles(km, ft, etc) are being displayed across the map,X,Y,.,13,CurrentTool当前工具,Sets what tool the user has in their hands 预定义工具Many pre-defined tools, including: Zoom In/Out Label Radius Select Pan Tool 自定义工具You als

7、o have the ability to create custom defined tools,.,14,MapX Methods,AboutBox ClipLine ClipLineV ConvertCoord ConvertCoordV CreateCustomTool Distance,ExportMap IsPointVisible PrintMap PropertyPage Refresh SetSize ZoomTo,METHODS,.,15,ConvertCoord,Convert between screen coordinates and geographic coord

8、inates (either direction) Useful for dealing with Mouse_Move events,METHODS,.,16,Distance,Computes distance given two pairs of geographic coordinates,METHODS,.,17,ZoomTo,Sets the CenterX, CenterY and Zoom properties with one method,METHODS,.,18,MapX 事件 （Events）,AnnotationAdded AnnotationChanged Clic

9、k DataMismatch DrawUserLayer ErrorMapViewChanged MouseDown ThemeModifyRequested,MouseMove MouseUp PolyToolUsed RequestData ResolveDataBind SelectionChanged ToolUsed,EVENTS,19,MapInfo terminology update,.,20,Annotations,A collection of text and symbols Sit on top of all layers Similar to a maps cosme

10、tic layer in MapInfo Professional,.,21,Geosets,.,22,GeoSet,A collection of Layers and settings for each layer Similar to a MapInfo Pro workspace MapX includes Geoset Manager.exe utility to manipulate geosets,.,23,What is a Geoset?,描述地图属性的文本文件 类似于 MapInfo Pro workspace 在geoset中设置每一层地图的属性 Through tags

11、 in *.gst file If a tag is absent, MapX uses default value Look in MapX help for list of all available tags,.,24,Geoset,!GEOSET !VERSION 100 begin_metadata GEOSETNAME = ”SalesArea GEOSETCENTER = 137.69,38.256 GEOSETZOOMLEVEL = 1800 GEOSETPROJECTION = 1,0 TABLERegions.tabFILE = Regions.tab TABLERegio

12、ns.tabISVISIBLE = TRUE TABLERegions.tabAUTOLABEL = TRUE TABLERegions.tabZOOMMIN = 300 TABLERegions.tabZOOMMAX = 800 TABLERegions.tabDISPLAYPENLINESTYLE = 2 TABLERegions.tabDISPLAYPENLINEWIDTH = 1 TABLERegions.tabDISPLAYPENCOLOR = 16711680 end_metadata,.,25,创建/编辑 GeoSets,Use Geoset Manager.exe Make s

13、ure to give each geoset a unique name,.,26,Changing Geosets,At Design Time (Property Page) Map1.Geoset = “United States” *.gst must be in same directory as GeoDictionary m_ctrlMapX.SetGeoset(“us.gst”) Map1.Layers(1).LoadGeosetLayers(“us.gst”) During Auto matching,.,27,GeoDictionary,.,28,GeoDictionar

14、y,See help topic in MapX 3.5 Contains list of registered tables to use during automatic databinding (automatching). Map.GeoDictionary=“GeoDictionary” HKEY_LOCAL_MACHINESoftwareMapInfoMapX3.0GeoDictionary=“c:program filesmapinfo mapxmapsgeodict.dct”,.,29,GeoDictionary Contents,For each registered fil

15、e User friendly name List of indexed fields Refining table name List of Geoset file names,.,30,Migm30.exe (Geodictionary Manager),.,31,Command Line Parameters,Useful for registering tables during an install program migm30.exe tablepath | geosetpath | tablepath /geoset=geosetfile /file=commandfilepat

16、h /remove,.,32,Command Line Parameters,See help topic in MapX 3.5 !,.,33,Sample 2,Annotations, Add, Modify and Remove Change Map View - Map object properties and methods Load Geoset - switch between different geosets,.,34,3 图层对象（Layers）,35,Layers,A collection of Layer Objects Much like transparencie

17、s on an overhead Each layer has its own attributes Labels Zoom Layering Style Override Visibility Selectablility,.,36,Regions,Lines,Points,Text,Pacific Ocean,37,Layers Methods,Add Add a MapInfo map layer to the layers collection Remove Removes a layer from the collection Move Repositions a layer wit

18、hin the collection,38,Layers Methods,CreateLayer Create a new MapInfo table and add it to map LayersDlg Displays a built-in “Layer Control” dialog to manipulate the layers,39,Sample 3,Layer Control Dialog Modify part of properties of a Layer Add a UserDrawLayer,.,40,4 User Tools,.,41,ToolUsed,An eve

19、nt that is fired after a user releases the mouse button from a tools use You can find out information such as: What tool was used Where user clicked mouse button Where user released mouse button Distance between points,EVENTS,42,Sample 4,More standard select tools A custom tool to show the X-Y coord

20、inate of the cursor,.,43,5 Selections and Features,44,Selections,A collection of Feature objects Created : When user clicks with a selection tool By means of the various select methods MapX automatically highlights all selected features Each layer object has its own Selection collection,45,Features

21、Collection,A collection of Feature objects, created by methods of the features object Similar to the selection object, except: The features do not get high-lit Each layer object may have multiple features collections,46,SelectAll ClearSelection SelectByPoint SelectByRadius SelectByRectangle SelectBy

22、Region,AllFeatures NoFeatures SearchAtPoint SearchWithinDistance SearchWithinRectangle SearchWithinFeature,Selection Methods,Feature Methods,Feature/Selection Methods,47,Sample 5,SearchWithinDistance SearchWithinFeature - Search Dealers example SelectByRectangle SelectByRegion,.,48,6 Find,49,Find,Fi

23、nd allows you to locate items on a map The layer you are searching must have an indexed column in order for you to utilize the find method,50,Find Terminology,FindFeature Object is returned by the search method of the find object A Refining Boundary is used to distinguish between multiple features w

24、ith the same name Result Codes provide information on the Find Object,51,Sample 6,A Find exaple - Find dealers within Distance nnn of a city of a state,.,52,7 Datasets,.,53,DataBinding,.,54,Data Binding,55,DataBinding,A way of tying data from an external source to the map Creates a DATASET when data

25、 is bound to a MapX map layer Why? Theme maps Query information Summarization of data geographically,56,DataTypes You May Use,Data Access Object Recordset (DAO) Open DataBase Connectivity (ODBC) data source Lotus Notes Delphi Native Data Source VB Data Control & Remote Data Control MapInfo Table,.,5

26、7,Data Binding,When matching records in the database with features on the map, you may specify the match or let MapX choose using the GeoDictionary Geodictionary - Maintains information about map layers and their referencing capabilities,.,58,OR,Data Binding,.,59,Three Types of Databinding,Normal Bi

27、nd data to existing map features XY Bind Requires use of BindLayer object Creates symbols on the fly from long/lat coordinates already in your database PointRef Requires use of BindLayer object Creates symbols on the fly by matching geographic information in your database against features on an exis

28、ting map layer,60,BindLayer Object,Used as a parameter to the Datasets.add method Specifies how to create new symbols from your data Must be able to geo-reference data Needs Longitude and Latitude OR A field that can be matched up against a map layer (zipcode, city, district, etc),.,61,BindLayer Obj

29、ect Properties,CoordSys FileSpec KeyLength LayerName LayerType RefColumn1 RefColumn2 ReferenceLayer,.,62,Cached Data Binding,Aggregation done by MapX Data cached by MapX Initial load time on Datasets.Add Fast redraw & thematics Bogs down for very large datasets,.,63,“Normal” Data Binding,Datasource

30、Fields aggregated and attached to an existing map layer You can specify Key Field and/or Layer OR MapX can determine Key Field and/or Layer,.,64,X-Y Data Binding,Datasource already contains X & Y coordinates You specify X,Y and Key Fields via BindLayer object New point layer is created Remaining dat

31、asource fields are bound to the new layer as a dataset,.,65,Point Reference Binding,Datasource contains geographic key such as zipcode You specify key Field and Reference layer via BindLayer object New point layer is created with a point for each row in the datasource Remaining datasource fields are

32、 bound to the new layer as a dataset,.,66,Dynamic DataBinding,Aggregation done by Datasource Data fetched when needed by MapX No initial wait on Datasets.Add Redraw speed dependant on Datasource speed Data is requested by Geographic Key Can handle very large datasets XY and Point reference binds are

33、 not supported,.,67,Custom Dataset Types,COM Based Standard extensible architecture Install, Register, and Go Documented in Help File Examples Notes ODBC Delphi,.,68,Data Binding Demo,Dynamic vs Normal X-Y and PointRef Uses ODBC Dataset C+ code samples (uses C+ wrappers),69,Sample 7,5 examples of Da

34、ta Binding of data type:DAO, ODBC, SetLayer, GlobalHandle, and Unbound And of binding type of normal, X-Y point, and point reference,.,70,8 Themes,71,专题图（Themes）,Thematic mapping is the process of shading your map based on your data. A valuable data visualization tool Many examples High Income areas

35、 Population Distribution Rainfall maps Sales distribution maps,72,Types of Themes,Ranges Pie Chart Bar Chart Graduated Symbol Dot Density Individual Value,These themes may be “layered” on top of one another,.,73,74,Creating Themes,A Theme hangs off of a dataset in the object model You add a theme to

36、 a dataset,75,Manipulating a Theme,ThemeDlg method Modify the ThemeProperties object,76,Modify Theme Dialogs included with MapX,77,Legend,The key to understanding a theme Tells what each style on the map means data-wise You may modify the Legend by Using the LegendDlg method (easiest) Modifying each

37、 LegendText object individually Modifying the LegendTitle and SubTitle,.,78,Modify Legend Dialog,.,79,Time to see this stuff in action,More of the VB sample app, showing: Adding Datasets Using a BindLayer object Creating a Theme,.,80,Sample 8,Example of theme types: Ranged Bar Chart Pie Char Graduat

38、ed Symbol Dot Density Individual Value,.,81,9 Object Editing,.,82,Feature Factory,An object off of the map object that allows you to do: Feature Creation Feature Manipulation,.,83,FeatureFactory Methods,BufferFeatures CombineFeatures CreateArc CreateCircularRegion CreateEllipticalRegion CreateLine CreateRegion,CreateSymbol CreateText EraseFeature IntersectFeatures IntersectionPoints IntersectionTest,.,84,BufferFeatures,Returns a feature representing a buff