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Table Of Contents
Sampling Existing Ground Profile Data from Multiple Surfaces
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To select a surface to sample
1 From the Profiles menu, choose Surfaces ä Set Current Surface to display the
Select Surface dialog box.
2 If the current surface list is set to Volume Surface, select the Terrain Surface
radio button to change the surfaces that are displayed in the list.
3 In the Select surface to open list, select the surface you want to use.
4 Click OK to set the selected surface as current.
Using Multiple Surfaces when Sampling the
Existing Ground Profile Data
You can sample the existing ground surface for profile generation from more
than one surface. If you create a file of multiple surfaces using the Select
Multiple Surface command, then that list of surfaces is used if multiple surfaces
are enabled. To enable the use of multiple surfaces, use the Toggle Multiple
Surfaces command. To use multiple surfaces when sampling the existing ground
profile data, use the multiple surfaces option.
1 From the Profiles menu, choose Surfaces ä Toggle Multiple Surfaces.
A prompt is displayed on the command line, stating that multiple surfaces are
on or off.
If multiple surfaces are on, then the Sample From Surface commands in the
Profiles and Sections menus use all the surface names in the surfaces.txt file
created by the Select Multiple Surfaces command. Each surface added to the list
is used to define the profile surface and subsurface data. The commands extract
elevations for the profile or sections from the surface file associated with each
surface name in the list. The Surface Profile command adds the subsurface to an
existing profile without adding vertical grid lines or station elevations.