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Copyright © 2006 by Maribeth H. Price 11-1 Chapter 11 Basic Editing in ArcMap.

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Presentation on theme: "Copyright © 2006 by Maribeth H. Price 11-1 Chapter 11 Basic Editing in ArcMap."— Presentation transcript:

1 Copyright © 2006 by Maribeth H. Price 11-1 Chapter 11 Basic Editing in ArcMap

2 Copyright © 2006 by Maribeth H. Price 11-2 Outline Understanding the basic editing process Using snapping to ensure topological integrity of features Adding features to map layers Using the sketch tools and context menus for detailed and precise location of features Entering and editing attribute data

3 Copyright © 2006 by Maribeth H. Price 11-3 What can you edit? ArcView –Shapefiles and geodatabase feature classes ArcEditor and ArcInfo –Geodatabase networks –Geodatabase topologic features Coverages can only be edited in the ArcEdit program of ArcInfo. They cannot be edited in ArcMap.

4 Copyright © 2006 by Maribeth H. Price 11-4 The Editor toolbar Menu Sketching tools Task bar Target layer SplitRotate Sketch Properties Attribute Editor Edit tool

5 Copyright © 2006 by Maribeth H. Price 11-5 Snapping A dangle—the two lines fail to connect Correct topology—the horizontal line intersects the vertical one, creating three lines. node Automatically connects features Moves the editing cursor exactly to the same point once it gets close.

6 Copyright © 2006 by Maribeth H. Price 11-6 Snapping tolerance a b a c b When edit cursor falls inside tolerance it jumps to the precise location so next point falls in the same spot. + +

7 Copyright © 2006 by Maribeth H. Price 11-7 Types of snapping End snapping Edge snapping Vertex snapping ? Snapping tolerance +

8 Copyright © 2006 by Maribeth H. Price 11-8 Setting snapping

9 Copyright © 2006 by Maribeth H. Price 11-9 Editing features The Edit tool, sketch tool, and Task bar work together when editing Edit tool Sketch tool

10 Copyright © 2006 by Maribeth H. Price Target Layer Controls which layer new features will be placed in.

11 Copyright © 2006 by Maribeth H. Price Creating a feature Double-click to finish sketch

12 Copyright © 2006 by Maribeth H. Price Editing context menus Vertex menu Sketch menu Right-click off sketch Right-click on sketch

13 Copyright © 2006 by Maribeth H. Price Sketch menu options Enter absolute point Enter change in xy Constrain direction Constrain length

14 Copyright © 2006 by Maribeth H. Price More options Deflect from sketch Parallel to feature Deflect from feature Direction and length

15 Copyright © 2006 by Maribeth H. Price Adjacent polygons Topological errors between two polygons Coincident boundary between two polygons gap overlap

16 Copyright © 2006 by Maribeth H. Price Creating adjacent polygons Draw first polygon with Create New Task Add new polygon with AutoComplete Two polygons with coincident boundary.

17 Copyright © 2006 by Maribeth H. Price More tricks Multipart features Perpendicular edge snapping

18 Copyright © 2006 by Maribeth H. Price More sketch tools DistanceArc tool Intersection Trace tool Midpoint

19 Copyright © 2006 by Maribeth H. Price Modifying a feature Click and drag vertices Sketch keeps track of new figure shape Double-click when finished

20 Copyright © 2006 by Maribeth H. Price Rotating features Select feature Rotate tool Drag around rotation point Click and drag to move rotation point

21 Copyright © 2006 by Maribeth H. Price Splitting polygons Select polygon to split Sketch new boundary Double-click to finish sketch and create polygons

22 Copyright © 2006 by Maribeth H. Price Attribute Editor Selected features Edit all selected Edit single feature Explore features

23 Copyright © 2006 by Maribeth H. Price Saving work Save early, save often!!! Stops editing and asks to save any unsaved edits Saves and continues editing

24 Copyright © 2006 by Maribeth H. Price Coordinate systems ArcMap can edit across coordinate systems –Edited coordinates always saved to source file coordinate system regardless of data frame coordinate system Projecting on-the-fly may degrade performance –Avoid it when possible

25 Copyright © 2006 by Maribeth H. Price TIPS Always have a backup copy Shapefiles simplest and most robust Keep number of open files down Try to keep layers in same coordinate system Save frequently!!!!!


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