2.0

Chapter 1 Using the Grading Commands
10
Updating the Elevations of Selected Points Based
on a Stratum
You can update the elevations of selected points based on a stratum with the Modify
Point Elevations ä Modify By Selection command on the Grading menu.
To update the elevations of selected points based on a stratum
1 Select the current stratum. For more information, see Selecting the Current
Stratum in this chapter.
2 From the Grading menu, choose Modify Point Elevations ä Modify By Selection
to display the Random Point Settings dialog box.
NOTE
If you do not have a current stratum selected, then the command displays
the Select Current Stratum dialog box.
3 Do one of the following to specify the type of elevation:
n
Select First Surface to use the elevations of the first surface of the stratum
that you defined.
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Select Second Surface to use the elevations of the second surface of
the stratum.
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Select Difference to use the elevational difference between the two surfaces.
4 Click OK to continue. The Terrain Random Points dialog box is displayed.
5 Do one of the following to specify the mode for point selection:
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Click Update to update the point objects that already exist in the drawing.
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Click Add New to add new point objects on top of those that already exist in
the drawing.
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Click Cancel to exit the command.
6 Select the points to update, using one of the following methods:
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Select each point with your pointing device.
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Type W, press ENTER, and then draw a selection window around the points.
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Type C, press ENTER, and then draw a crossing selection around the points.
The command updates the points with the new elevations.