Geographic and Attribute Data: Selection, Input, and Editing - Introducing Geographic Information Systems with ArcGIS - page 331

Working with Line Editing Again
35. Add back Edit_Play_Lines. Zoom to that layer. Start editing. The lines feature class may not
show up in the Create Features template selection list. To add it back, enter the Organize
Feature Template window by pressing the Organize Templates button on the Create Features
window toolbar. Within the Organize Feature Template window, press the New Template button
to enter the Create New Templates Wizard. Make sure Edit_Play_Lines is selected with a check
beside its name and click Finish. You should see that Edit_Play_Lines is now a selectable
template within the Create Features window. Close the Organize Feature Template window.
36. Select Edit_Play_Lines as the editable template. After selecting elements on the map with the
Edit tool, experiment with Move, Split, Buffer, and Copy Parallel (found on the Editor menu). Stop
editing without saving edits.
37. Close ArcMap without saving changes.
In the previous exercises, you learned how to digitize lines and polygons directly into a personal
geodatabase feature class, and also learned two different ways to cope with the topological problems
that result.
In the next exercise you use some of these methods to add a sixth island to the UTM_Zone_2 feature
class North_Island_Polygons.
Exercise 5-7 (Follow-on)
Adding the Sixth Island
It turns out that the map you were working with (Figure 5-10 in Exercise 5-4) was very old. A volcano has
erupted since, making a new island. A digital orthophoto, converted into a grid named MSH, is available.
(Preliminaries: In the first step you will copy a line feature class, and you will make a second, empty line
feature class, both of which you will use later.)
1. Using ArcCatalog, make sure the 3D Analyst extension is turned on. Begin to make a
geodatabase Feature Class named Trail in
___IGIS-Arc_ YourInitials \Digitize&Transform
\Islands.mdb
When you come to the New Feature Class window that lets you define the Data Type and the
Field Properties, make the Type of features “Line Features” and place a check in the box beside
Coordinates include Z values. Click Next. Click Finish. From
[___]IGIS-Arc_AUX\D&T\Islands.mdb\UTM_Zone_2
Copy the PGDBFC named Trail_horizontal to
___IGIS-Arc_ YourInitials \Digitize&Transform
\Islands.mdb