【正文】 2022, 2022 ESRI. All rights reserved. 686 Geoprocessing ? IBasicGeoprocessor provides access to methods found in the Geoprocessing Wizard ? Use for an entire Feature class ? Most methods require an input table ? Clip ? Dissolve ? Intersect ? Merge ? Union B a s i c Ge oproce s s orIBa s ic Ge o p r o c e s s o r : I Un k n o wnS p a tia lR e fe r e n ce : IS p a tia lR e fe r e n ceCl ip ( in In p u tT a b le: I T a b le, inu se S e lect e d In p u t: B o o lea n , in cli p T a b le:IT a b le, in u se S e lect e d Cl ip: B o o lea n , inT o ler a n ce : Dou b le, in O u tp u tNa m e :IF e a tu r e Cl a ssNam e ) : IF e a tu r e Cl a ssM e r g e ( in T a b les: I A r r a y, in fie ldsT a b le:IT a b le, in O u tp u tNa m e :IF e a tu r e Cl a ssNam e ) : IF e a tu r e Cl a ssDi sso lve ( in In p u tT a b le: I T a b le, inu se S e lect e d : B o o lea n , in d issolve F ield :S tr ing , in su m m a r yF ield s: S tr ing , inOu tp u tNa m e : IDa ta se tNa m e ) : IT a b leIn te r se ct ( in In p u tT a b le: I T a b le, inu se S e lect e d In p u t: b o o lea n , ino ve r layT a b le: I T a b le, inu se S e lect e d Ove r lay: B o o lea n , inT o ler a n ce : Dou b le, in O u tp u tNa m e :IF e a tu r e Cl a ssNam e ) : IF e a tu r e Cl a ssUnio n ( in In p u tT a b le: I T a b le, inu se S e lect e d In p u t: B o o lea n , ino ve r a lyT a b le: I T a b le, in o ve r layT a b le:IT a b le, in u se S e lect e d Ove r lay: B o o lea n , inT o ler a n ce : Dou b le, in O u tp u tNa m e :IF e a tu r e Cl a ssNam e ) : IF e a tu r e Cl a ssIB a sicGe o p r o ce sso rIntroduction to Programming ArcObjects with VBA Copyright 169。 2022, 2022 ESRI. All rights reserved. 682 Geometry spatial operator interfaces ? Interfaces supported by subtypes of Geometry ? ITopologicalOperator（ 空間操作） ? IProximityOperator（ 測量） ? IRelationalOperator（ 檢查） ? 用于 … ?完成例如 buffer, cut, clip等空間操作 ?測量 shapes之間的距離 ?檢查空間關系 ?通過空間標準來進行查詢 Introduction to Programming ArcObjects with VBA Copyright 169。 2022, 2022 ESRI. All rights reserved. 678 Paths and polygons ? Polylines ?由一組閉合或不閉合的 Paths組成 ? Polygons ?由一個或多個 rings組成 Path with four segments Polygon with seven rings Introduction to Programming ArcObjects with VBA Copyright 169。 2022, 2022 ESRI. All rights reserved. 674 ? 線段：在曲線的起點和終點之間 ? 線段集合成 paths/rings ? Paths/rings集合成 lines/polygons ? 可以在任何層次上編輯 Feature geometry Segments Bezier curve Line Circular arc 3 Rings (closed paths) 2 Paths 1 Poly 1 Line Points Multipoints Polygons Polylines Introduction to Programming ArcObjects with VBA Copyright 169。Age 保存提交新的行 Table Row FeatureClass Feature Feature有一個 Shape 屬性來保幾何對象 Introduction to Programming ArcObjects with VBA Copyright 169。 2022, 2022 ESRI. All rights reserved. 669 Work with fields in a table ? IFields interface ? FieldCount 返回所有字段的數(shù)目 ? FindField 返回查找的字段的索引號 ? Field 返回指定索引號的字段 For intLoop = 1 To – 1 MsgBox (intLoop).Name Next intLoop intFieldNum = (Area) If intFieldNum 1 Then 39。 2022, 2022 ESRI. All rights reserved. 665 IField and IFieldEdit ? Get field properties with IField ? Readonly ? Set field properties with IFieldEdit ? Writeonly Dim pNameField As IFieldEdit Set pNameField = New Field With pNameField .Name = StreetName .Type = esriFieldTypeString .Length = 16 End With Introduction to Programming ArcObjects with VBA Copyright 169。 2022, 2022 ESRI. All rights reserved. 660 Working with Name objects ? A lightweight version of the object it represents ? Use Open on IName to return the object ? Several creatable subtypes Introduction to Programming ArcObjects with VBA Copyright 169。QI for IFeatureWorkspace Dim pCover As IFeatureDataset Set pCover = (streets) FeatureClasses Workspace FeatureDataset Introduction to Programming ArcObjects with VBA Copyright 169。 2022, 2022 ESRI. All rights reserved. 652 Lesson overview ? Data creation objects ? Workspace ? FeatureDataset ? FeatureClass ? Working with fields and field collections ? Creating Tables and FeatureClasses ? Adding rows ? Editing table values FeatureClasses Workspace FeatureDataset Introduction to Programming ArcObjects with VBA Copyright 169。Get another layer’s FeatureClass Dim pFClass As IFeatureClass Set pFClass = 39。Access the document’s selected layer Dim pLayer As ILayer Set pLayer = 39。Add a layer to MxDocument or Map Dim pMxDoc As IMxDocument Dim pMap As IMap Set pMxDoc = ThisDocument Set pMap = pFLayer 沒有設置數(shù)據(jù)源，所以圖標為失去數(shù)據(jù)連接的狀態(tài)。Here is an Endless Loop Do While Not MsgBox(Add a Record?) = vbYes 39。 Syntax Example Do Until/While a condition is true 39。 process each item … Next index Introduction to Programming ArcObjects with VBA Copyright 169。 2022, 2022 ESRI. All rights reserved. 641 Accessing layers ? Access layers from Map or MxDocument ? Get the selected layer (IMxDocument) ? Get a specific layer (IMap) ? Get all layers (IMap) ? An enumeration of layers Dim pLayer As ILayer Set pLayer = Dim pAllLayers As IEnumLayer Set pAllLayers = Dim pLayer As ILayer Set pMap = Set pLayer = (3) Introduction to Programming ArcObjects with VBA Copyright 169。 2022, 2022 ESRI. All rights reserved. 638 Lesson overview ? 訪問 maps and layers ? 遍歷 maps 和 layers ? Collections ? Enumerations ? 創(chuàng)建一個新的圖層 ? 使用圖層對象的屬性 ?設置一個圖層的數(shù)據(jù)源 Introduction to Programming ArcObjects with VBA Copyright 169。 2022, 2022 ESRI. All rights reserved. 635 Example: MxDocument Map layer ? Get the FocusMap (active data frame) from MxDocument ? MxDocument may have several Maps ( * ) ? Get a layer from the the Map ? Many type