1. GIS Lecture: Editing Data

2. Outline
GIS Features
Editing Features
Advanced Editing

3. GIS Features

4. Points Single features Nodes Vertex points line endpoints
controls the shape of lines and polygons

5. Lines Starting and ending points with shape vertices as needed
Vertex points

6. Polygons
Three or more lines joined to form a closed area

7. Editing Features

8. Editing Features In ArcMap Create base map
Create new feature class in ArcCatalog
Add the feature class into ArcMap
Start Editing
Edit features
Stop Editing and Save

9. Create new feature class
In ArcCatalog
Navigate to desired location
Create a new feature class or shapefile
Add spatial reference information
Add new fields (optional)

10. Create basemap
Vector features or Raster images
Add the feature class

11. Start Editing
Start Editing

12. Begin editing
pick points

13. Stop editing
Editor toolbar, Stop Editing
Save edits

14. Edit attribute data Create fields if necessary
Start Editing, populate fields in table

15. Advanced Editing

16. Specify angle and length
Lines and polygons
Straight segment tool
Type length and angle

17. Snapping tools
Snapping toolbar

18. Trace tool
Good for complicated shapes
Editor toolbar, Trace tool

19. Smooth tool
Smoothes sharp angles in polygon outlines to improve aesthetic or cartographic quality
Smooth before
Smooth after

20. Cut polygons Creates two polygons from one original Cut polygon tool
Polygon before
Polygon after

21. Move and rotate
Adjusts features
Polygon before
Polygon after

22. Summary
GIS Features
Editing Features
Advanced Editing