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- Open the drawing named Editing Feature Line Geometry.dwg located in the Chapter 17 class data folder. In this drawing, two more feature lines have been added for lot 26. You’ll begin by adding more PIs and a curve to the back of lot 26.
- Click the green feature line. If the Edit Geometry panel is not visible, click Edit Geometry on the ribbon.
- Click Insert PI. When you’re prompted to specify a point, use the Center object snap to select the center of the blue circle. You will be prompted to specify an elevation.
- On the command line, type S and press Enter to invoke the Surface option. The Select Surface dialog box will open.
- Verify that EG is selected and click OK.
- Press Enter to accept the elevation shown on the command line. You will be prompted to specify the next point.
- Use the Center object snap to select the center of the red circle. You will be prompted to specify an elevation.
- On the command line, type S and press Enter to invoke the Surface option. Press Enter again to accept the surface elevation. Additional PIs have been added, but you still need to address the missing curve.
- Press Esc twice to clear the previous command. Click the green feature line, and then click Fit Curve on the ribbon. You are prompted to specify a point.
- At the command line, type P and press Enter to invoke the Points option. You are prompted to specify the start point.
- Use the Center object snap to select the center of the blue circle.
- Use the Center object snap to select the center of the red circle. Press Esc twice to end the command and clear the selection. A curve is added to match the geometry of the back lot line. Next, you will break the feature line for lot 25 and join it to the feature line for lot 26.
- Click any feature line in the drawing, and then click Break on the ribbon. You are prompted to select an object to break.
- Click the blue perimeter feature line for lot 25. You are prompted to specify a second break point.
- Type F and press Enter to invoke the First point option.
- Use the Endpoint object snap to select the back corner where lots 25 and 26 meet. You are prompted to select the second break point.
- Repeat the previous step to select the same point again. Press Esc twice to end the command and clear the selection. The drawing does not appear different, but the blue feature line has been broken into two feature lines.
- Click the blue feature line at the back of lot 25, and then click Join on the ribbon.
- Click the green feature line. The green changes to blue, indicating that the feature lines are joined to create a single feature line (see Figure 17.5).
Figure 17.5 The result of editing the feature lines in this exercise.
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Tips:By choosing the same location for the first and second point, you break the feature line without creating a gap.
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- Using Edit Geometry Commands
- Using Edit Elevation Commands
Download Exercise File :