MapX培训教程（课堂PPT）

1、1MapX培训教程培训教程2今天的内容今天的内容7MapX概述7MapX 基本概念 (Map/Layer/Tools) 7图层集(Layers)7工具集(Tools)7Selections and Features37查找 (Find)7数据集(DataSets)7专题图(Themes)7对象编辑(Object Editing)7地图输出(Exporting Maps)今天的内容今天的内容41 MapX概述概述5什么是什么是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。6Buzzwords7Object 基本术语基本术语7对象Object - A thing. Something. Anything.7属性Property - An adjective that describes an object.7方法Method - An action that an object can do.7集合Collection - A group of similar objects.7事件Event - A reaction an object makes to certain stimul

3、i.8Object Quickview Note: This is the entire object diagramSelectionFeaturesLayerLayersLegendThemesDatasetsMap92 MapX 基本概念基本概念10地图对象地图对象Map所有对象的基础7Everything is off of this object7Maps are the basic building blocks for MapX. Each map is defined by (at minimum) a Layers collection11地图对象属性地图对象属性(Map P

4、roperties)7Annotations7AreaUnit7AutoRedraw7Bounds7CenterX7CenterY7CurrentTool7DataSet7DataSetGeoField7DataSets7DataSetTheme7DefaultStyle7DisplayCoordSys7DefaultConversionResolution7ExportSelection 7FeatureFactory 7GeoDictionary7Geoset7Geosets7GeoSetWidth7hWnd7Layers7MapPaperHeight7MapPaperWidth7MapU

5、nit7MaxSearchTime7MousePointer7NumericCoordSys 7PaperUnit7PreferCompactLegends7Rotation7SelectionStyle7Title7TitleText7Version7Zoom12CenterX, CenterY, Zoom控制地图显示的三个要素控制地图显示的三个要素7Controls what part of the map is showing7CenterX = Longitude (X coord)7CenterY = Latitude (Ycoord)7Zoom = How many miles(k

6、m, ft, etc) are being displayed across the mapXY13CurrentTool当前工具当前工具7Sets what tool the user has in their hands7预定义工具Many pre-defined tools, including: &Zoom In/Out&Label&Radius Select &Pan Tool7自定义工具You also have the ability to create custom defined tools14MapX Methods7AboutBox7Cli

7、pLine7ClipLineV7ConvertCoord7ConvertCoordV7CreateCustomTool7Distance7ExportMap7IsPointVisible7PrintMap7PropertyPage7Refresh7SetSize7ZoomToMETHODS15ConvertCoord7Convert between coordinates and coordinates (either direction)7Useful for dealing with Mouse_Move eventsMETHODS16Distance7Computes distance

8、given two pairs of geographic coordinatesMETHODS17ZoomTo7Sets the CenterX, CenterY and Zoom properties with one methodMETHODS18MapX 事件事件 （Events）7AnnotationAdded7AnnotationChanged7Click7DataMismatch7DrawUserLayer7ErrorMapViewChanged7MouseDown7ThemeModifyRequested7MouseMove7MouseUp7PolyToolUsed7Reque

9、stData7ResolveDataBind7SelectionChanged7ToolUsedEVENTS19MapInfo terminology update20Annotations7A collection of text and symbols7Sit on top of all layers7Similar to a maps cosmetic layer in MapInfo Professional21Geosets22GeoSet7A collection of Layers and settings for each layer7Similar to a MapInfo

10、Pro workspace7MapX includes Geoset Manager.exe utility to manipulate geosets23What is a Geoset?7描述地图属性的文本文件7类似于 MapInfo Pro workspace7在geoset中设置每一层地图的属性&Through tags in *.gst file&If a tag is absent, MapX uses default value&Look in MapX help for list of all available tags24Geoset!GEOSET!

11、VERSION 100begin_metadataGEOSETNAME = ”SalesAreaGEOSETCENTER = 137.69,38.256GEOSETZOOMLEVEL = 1800GEOSETPROJECTION = 1,0TABLERegions.tabFILE = Regions.tabTABLERegions.tabISVISIBLE = TRUETABLERegions.tabAUTOLABEL = TRUETABLERegions.tabZOOMMIN = 300TABLERegions.tabZOOMMAX = 800TABLERegions.tabDISPLAYP

12、ENLINESTYLE = 2TABLERegions.tabDISPLAYPENLINEWIDTH = 1TABLERegions.tabDISPLAYPENCOLOR = 16711680end_metadata25创建创建/编辑编辑 GeoSets7Use Geoset Manager.exe7Make sure to give each geoset a unique name26Changing Geosets7At Design Time (Property Page)7Map1.Geoset = “United States”&*.gst must be in same

13、directory as GeoDictionary7m_ctrlMapX.SetGeoset(“us.gst”)7Map1.Layers(1).LoadGeosetLayers(“us.gst”)7During Auto matching27GeoDictionary28GeoDictionary7See help topic in MapX 3.57Contains list of registered tables to use during automatic databinding (automatching).7Map.GeoDictionary=“GeoDictionary”7H

14、KEY_LOCAL_MACHINESoftwareMapInfoMapX3.0GeoDictionary=“c:program filesmapinfo mapxmapsgeodict.dct”29GeoDictionary Contents7For each registered file&User friendly name&List of indexed fields&Refining table name&List of Geoset file names30Migm30.exe (Geodictionary Manager)31Command Line

15、 Parameters7Useful for registering tables during an install program7migm30.exe tablepath | geosetpath |tablepath /geoset=geosetfile/file=commandfilepath /remove32Command Line Parameters7See help topic in MapX 3.5 !33Sample 27Annotations, Add, Modify and Remove7Change Map View - Map object properties

16、 and methods7Load Geoset - switch between different geosets343 图层对象（图层对象（Layers）35Layers7A collection of Layer Objects &Much like transparencies on an overhead7Each layer has its own attributes&Labels&Zoom Layering &Style Override&Visibility&Selectablility36Pacific Ocean37Lay

17、ers Methods7Add &Add a MapInfo map layer to the layers collection7Remove&Removes a layer from the collection7Move&Repositions a layer within the collection38Layers Methods7CreateLayer&Create a new MapInfo table and add it to map7LayersDlg&Displays a built-in “Layer Control” dialo

18、g to manipulate the layers39Sample 37Layer Control Dialog7Modify part of properties of a Layer7Add a UserDrawLayer404 User Tools41ToolUsed7An event that is fired after a user releases the mouse button from a tools use 7You can find out information such as:&What tool was used&Where user click

19、ed mouse button&Where user released mouse button&Distance between pointsEVENTS42Sample 47 More standard select tools7 A custom tool to show the X-Y coordinate of the cursor435 Selections and Features44Selections7A collection of Feature objects&Created :8When user clicks with a selection

20、tool8By means of the various select methods7MapX automatically highlights all selected features7Each layer object has its own Selection collection45Features Collection7A collection of Feature objects, created by methods of the features object7Similar to the selection object, except:&The features

21、 do not get high-lit&Each layer object may have multiple features collections467SelectAll7ClearSelection7SelectByPoint7SelectByRadius7SelectByRectangle7SelectByRegion7AllFeatures7NoFeatures7SearchAtPoint7SearchWithinDistance7SearchWithinRectangle7SearchWithinFeatureFeature/Selection Methods47Sam

22、ple 57 SearchWithinDistance7 SearchWithinFeature - Search Dealers example7SelectByRectangle7SelectByRegion486 Find49Find7Find allows you to locate items on a map7The layer you are searching must have an indexed column in order for you to utilize the find method50Find Terminology7FindFeature Object i

23、s returned by the search method of the find object7A Refining Boundary is used to distinguish between multiple features with the same name7Result Codes provide information on the Find Object51Sample 67 A Find exaple - Find dealers within Distance nnn of a city of a state527 Datasets53DataBindingDAOO

24、ther SourcesODBCNOTES54Data BindingStateSalesDistrictWA4459 WESTTX6979 SCFL3423 SENY3922 EAST55DataBinding7A way of tying data from an external source to the map7Creates a when data is bound to a MapX map layer7Why?&Theme maps&Query information&Summarization of data geographically56DataT

25、ypes You May Use7Data Access Object Recordset (DAO)7Open DataBase Connectivity (ODBC) data source7Lotus Notes7Delphi Native Data Source7VB Data Control & Remote Data Control7MapInfo Table57Data Binding7When matching records in the database with features on the map, you may specify the match or l

26、et MapX choose using the GeoDictionary7Geodictionary - Maintains information about map layers and their referencing capabilities58GeoDictionaryLet theSpecify the matchYou specify match between your data and the MapX.Data Binding59Three Types of Databinding7Normal& Bind data to existing map featu

27、res7XY Bind Requires use of BindLayer object&Creates symbols on the fly from long/lat coordinates already in your database7PointRef Requires use of BindLayer object&Creates symbols on the fly by matching geographic information in your database against features on an existing map layer60BindL

28、ayer Object7Used as a parameter to the Datasets.add method7Specifies how to create new symbols from your data7Must be able to geo-reference data&Needs Longitude and Latitude &A field that can be matched up against a map layer (zipcode, city, district, etc)61BindLayer Object Properties7CoordS

29、ys7FileSpec7KeyLength7LayerName7LayerType7RefColumn17RefColumn27ReferenceLayer62Cached Data Binding7Aggregation done by MapX7Data cached by MapX&Initial load time on Datasets.Add&Fast redraw & thematics7Bogs down for very large datasets63 “Normal” Data Binding7Datasource Fields aggregate

30、d and attached to an existing map layer7You can specify Key Field and/or Layer&OR7MapX can determine Key Field and/or Layer64X-Y Data Binding7Datasource already contains X & Y coordinates7You specify X,Y and Key Fields via BindLayer object7New point layer is created7Remaining datasource fiel

31、ds are bound to the new layer as a dataset65Point Reference Binding7Datasource contains geographic key such as zipcode7You specify key Field and Reference layer via BindLayer object7New point layer is created with a point for each row in the datasource7Remaining datasource fields are bound to the ne

32、w layer as a dataset66Dynamic DataBinding&Aggregation done by Datasource&Data fetched when needed by MapX8No initial wait on Datasets.Add8Redraw speed dependant on Datasource speed8Data is requested by Geographic Key&Can handle very large datasets&XY and Point reference binds are not

33、 supported67Custom Dataset Types7COM Based&Standard extensible architecture7Install, Register, and Go7Documented in Help File7Examples&Notes&ODBC&Delphi68Data Binding Demo7Dynamic vs Normal7X-Y and PointRef7Uses ODBC Dataset7C+ code samples (uses C+ wrappers)69Sample 77 5 examples of

34、 Data Binding of data type:DAO, ODBC, SetLayer, GlobalHandle, and Unbound7And of binding type of normal, X-Y point, and point reference708 Themes71专题图（专题图（Themes）7Thematic mapping is the process of shading your map based on your data.7A valuable data visualization tool7Many examples&High Income

35、areas&Population Distribution&Rainfall maps&Sales distribution maps72Types of Themes7Ranges7Pie Chart7Bar Chart7Graduated Symbol7Dot Density7Individual ValueThese themes may be “layered” on top of one another7374Creating Themes7A Theme hangs off of a dataset in the object model7You add a

36、 theme to a dataset75Manipulating a Theme7ThemeDlg method7Modify the ThemeProperties object76Modify Theme Dialogs included with MapX77Legend7The key to understanding a theme7Tells what each style on the map means data-wise7You may modify the Legend by&Using the LegendDlg method (easiest)&Mod

37、ifying each LegendText object individually&Modifying the LegendTitle and SubTitle78Modify Legend Dialog79Time to see this stuff in action7More of the VB sample app, showing:&Adding Datasets&Using a BindLayer object&Creating a Theme80Sample 87 Example of theme types:&Ranged&Ba

38、r Chart&Pie Char&Graduated Symbol&Dot Density&Individual Value819 Object Editing82Feature Factory7An object off of the map object that allows you to do:&Feature Creation&Feature Manipulation83FeatureFactory Methods7BufferFeatures7CombineFeatures7CreateArc7CreateCircularRegion7CreateEllipticalRegion7CreateLine7CreateRegion7CreateSymbol7CreateText7EraseFeature7IntersectFeatures7IntersectionPoints7IntersectionTest84BufferFeatures7Returns a feature representing a buffer region. 85EraseFe