Heads-Up Digitizing - 4

The following is a listing of how to do this using ARC/INFO. All commands for ARC/INFO will be printed in bold here. In this example, the campus image is used as a backdrop to add tree locations using on-screen digitizing.

1. To enter ARCEDIT and set the display, type: arcedit and display 9999.

Arc: arcedit

Copyright (C) 1982-1997 Environmental Systems Research Institute, Inc.

All rights reserved.

ARCEDIT (COGO) Version 7.1.1 (Thu Feb 6 23:26:50 PST 1997)

Arcedit: display 9999

 

2. Create the new coverage, called "trees" that uses the same registration as "campus".

Arcedit: create trees campus

Creating C:\ARCDATA\DIP\CAMPUS\TREES

The edit coverage is now C:\ARCDATA\DIP\CAMPUS\TREES

WARNING the Map extent is not defined

Defaulting the map extent to the BND of C:\ARCDATA\DIP\CAMPUS\TREES

 

3. It is possible that you may not have a coverage to "borrow" the registration tics from. In this case, you must create the location of the tics yourself. In this case, select areas on the coverage that may be easy to find later.
4. Set the map extent to be the same as the rectified image.

Arcedit: mapextent image rect-campus.tif

 

5. Create the drawing environment, including the image, and refresh the graphical display.

Arcedit: drawenvironment all on

Arcedit: image rect-campus.tif

Arcedit: draw

 

6. Set the edit feature to label and reset the map extent to focus on a particular area. Now add the tree locations. The graphical display window will something like this:

Arcedit: editfeature label

0 element(s) for edit feature LABEL

Arcedit: add

--------------------Options--------------------

1) Add Label 5) Delete last label 8) Digitizing Options

9) Quit

(Label) User-ID: 1 Coordinate = 393034.193,525101.468

(Label) User-ID: 2 Coordinate = 392935.896,525068.446

(Label) User-ID: 3 Coordinate = 392911.322,525088.797

(Label) User-ID: 4 Coordinate = 392804.577,525031.201

(Label) User-ID: 5 Coordinate = 392816.096,524970.149

(Label) User-ID: 6 Coordinate = 392700.521,524975.525

6 label(s) added to C:\ARCDATA\DIP\CAMPUS\TREES

Arcedit:

 

7. Save the coverage and exit ARCEDIT.