36. Exercise 4 Smoothing a Surface

jeewc3d.blogspot.com

https://knowledge.autodesk.com/suppor...

In this exercise, you will smooth a surface using the Natural Neighbor Interpolation (NNI) method.

This exercise continues from Exercise 3: Adding a Hide Boundary.

Smooth a surface using NNI

Open Surface-4D.dwg, which is located in the tutorials drawings folder.
In Toolspace, on the Prospector tab, expand the XGND surface Definition collection and right-click Edits.
Click Smooth Surface.
In the Smooth Surface dialog box, specify the following parameters:
Select Method: Natural Neighbor Interpolation
Output Locations: Grid Based
The Grid Based output location interpolates surface points on a grid defined within specified polygon areas selected in the drawing. After the areas are defined, you can specify the grid X and Y spacing and orientation properties.

For the Select Output Region parameter, click the Value column. Click .
On the command line, enter Surface for the output region. This option will smooth the whole surface, rather than just the area within a specified rectangle or polygon.
In the Smooth Surface dialog box, specify the following parameters:
Grid X-Spacing: 10
Grid Y-Spacing: 10
In the drawing window, notice where some of the contour lines are especially angular. Click OK to smooth the surface.
The display of the surface is smoothed; contours are less angular. A Smooth Surface item is added to the Edits list view on the Prospector tab.

• #education
• #civil_3d
• #surface
• #tutorial
• #autocad_civil_3d
• #autocad_vs_sketchup
• #fix_smoothing_autocad
• #how_to_smooth_existing_surface_in_civil_3d
• #smoothing_contours_in_civil_3d