Topology in ArcGIS

Nov 23, 2016Download as PPTX, PDF0 likes185 views

The document provides steps to correct topology errors in a geospatial dataset. The steps include: 1) importing a feature class into a new geodatabase and feature dataset; 2) building a topology on the dataset; 3) using the topology toolbar to search for and inspect errors, such as gaps or overlaps between features; and 4) correcting the errors by merging or creating new features. Once all errors are addressed, the edits are saved and the corrected dataset remains in the geodatabase.

STEP-1 Add the file to be corrected
Tip: Save your ArcMAP *.mxd file before starting (to avoid losing data due to some
error)

Step-2: Create a personal/file geodatabase

Step-3: Right click geodatabase  New  New Feature Dataset

Select the projection of the dataset (same as data to be corrected)

Step-4: Right Click New Feature Dataset  Import  Feature Class (Single)

Select the layer in Input  Give a Output Feature Class Name  OK

Step-5: Right Click New Feature Dataset  Topology

Step-6: Move Topology layer to ArcMap from Catalog
Note: Remove existing layers

Step-8: Start Editing to highlight the toolbar

Step-9: Click on Error Inspector on Topology toolbar

Step-10: Click Search Now in Screen Below to begin error search

RIGHT CLICK ERROR TO SHOW OPTIONS. USUALLY BOUNDARY CAN BE MARKED
AS EXCEPTION. ZOOM TO LAYER TO SEE ERROR PROPERLY

Zoom to the next error which is a gap in dataset

Merge it with nearby polygons (check land use type in imagery or Give new
Attributes)

For Must not Overlap Error – Use Merge. Select any adjacent Polygons to Merge the Error

Save Edits  Stop Editing (after all errors are corrected)
 The file inside geodatabase is the final

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Topology in ArcGIS

1. TOPOLOGY

2. STEP-1 Add the file to be corrected Tip: Save your ArcMAP *.mxd file before starting (to avoid losing data due to some error)

5. Step-2: Create a personal/file geodatabase

6. Step-3: Right click geodatabase  New  New Feature Dataset

7. Give a name to new feature dataset

8. Select the projection of the dataset (same as data to be corrected)

9. Click Next  Finish (No changes here)

10. Step-4: Right Click New Feature Dataset  Import  Feature Class (Single)

11. Select the layer in Input  Give a Output Feature Class Name  OK

12. Step-5: Right Click New Feature Dataset  Topology

15. Step-6: Move Topology layer to ArcMap from Catalog Note: Remove existing layers

17. Step-7: Display Topology Toolbar

18. Step-8: Start Editing to highlight the toolbar

19. Step-9: Click on Error Inspector on Topology toolbar

20. Step-10: Click Search Now in Screen Below to begin error search

21. RIGHT CLICK ERROR TO SHOW OPTIONS. USUALLY BOUNDARY CAN BE MARKED AS EXCEPTION. ZOOM TO LAYER TO SEE ERROR PROPERLY

22. Zoom to the next error which is a gap in dataset

23. Create New Feature in Gap

24. Merge it with nearby polygons (check land use type in imagery or Give new Attributes)

25. For Must not Overlap Error – Use Merge. Select any adjacent Polygons to Merge the Error

26. Save Edits  Stop Editing (after all errors are corrected)  The file inside geodatabase is the final

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Topology in ArcGIS

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