Digitizing features_2 in ARC GIS

Digitizing in GIS is the process of converting geographic data either from a hardcopy or a scanned image into vector data by tracing the features. During the digitzing process, features from the traced map or image are captured as coordinates in either point, line, or polygon format.

1. Digitizing features MASHHOOD ARIF

2. Create new feature class Created in ArcCatalog GIS TUTORIAL 1 - Basic Workbook 2

3. Create new feature class Add spatial reference information GIS TUTORIAL 1 - Basic Workbook 3

4. Create new feature class Add new fields GIS TUTORIAL 1 - Basic Workbook 4

5. Create new feature class Feature class created GIS TUTORIAL 1 - Basic Workbook 5

6. Creating Feature Layers or Shapefiles in ArcMap GIS TUTORIAL 1 - Basic Workbook 6 Within ArcMap: Locate an existing data layer that is similar to the layer that you wish to create. Start editing the existing layer, then digitize the new feature Select the new feature Export the selection to a shapefile Add the shapefile- fields already present and map projection is already defined Examples in the instructor exercise

7. Digitize new features Create base map Add feature in ArcMap Start editing (Editor toolbar) Digitize feature Stop editing and save GIS TUTORIAL 1 - Basic Workbook 7

8. Create base map for digitizing Vector features or raster images GIS TUTORIAL 1 - Basic Workbook 8

9. Add new feature class GIS TUTORIAL 1 - Basic Workbook 9

10. Add Editor toolbar Customize, Toolbars, Editor toolbar GIS TUTORIAL 1 - Basic Workbook 10

11. Start editing Editor, Start editing GIS TUTORIAL 1 - Basic Workbook 11

12. Begin digitizing GIS TUTORIAL 1 - Basic Workbook 12

13. Click point (tree) locations GIS TUTORIAL 1 - Basic Workbook 13

14. Stop editing Editor, Stop editing GIS TUTORIAL 1 - Basic Workbook 14

15. Edit attribute data Start editing, populate fields in table GIS TUTORIAL 1 - Basic Workbook 15 1 2

16. Advanced Digitizing tools 16 GIS TUTORIAL 1 - Basic Workbook

17. Specify angle and length Lines and polygons Straight segment tool Type length and angle GIS TUTORIAL 1 - Basic Workbook 17

18. Snapping tools Snapping toolbar GIS TUTORIAL 1 - Basic Workbook 18 Point Snapping Endpoint Snapping Vertex Snapping Edge Snapping

19. Trace tool Good for complicated shapes Editor toolbar, Trace tool GIS TUTORIAL 1 - Basic Workbook 19

20. Generalize tool Creates features for use at small scales with less detail while preserving basic shapes U.S. Census cartographic boundary files GIS TUTORIAL 1 - Basic Workbook 20 Census TIGER water feature City planning rivers

21. Smooth tool Smoothes sharp angles in polygon outlines to improve aesthetic or cartographic quality GIS TUTORIAL 1 - Basic Workbook 21 Smooth before Smooth after

22. Cut polygons Creates two polygons from one original Cut polygon tool GIS TUTORIAL 1 - Basic Workbook 22 Polygon before Polygon after