Use contour data to create or modify a surface.
Surface contour data are created from polylines whose points are all at the same elevation.
You can add contour data only to TIN surfaces.
Topics in this section
- Recommendations for Creating Surfaces from Contours
When you create a surface from contour data, especially if you want to add other data to the surface, you can generate a better surface model whose contours will match the contour data if you follow recommended guidelines.
- Weeding and Supplementing Factors for Contours
Use weeding and supplementing to add or remove vertices along a contour.
- Contour Data and Surface Triangulation
Information obtained from a contour map differs greatly from data taken randomly in the field.
- Supplementing Missing Contour Information
When you create a model from contours and then generate contours from this model, in some cases, AutoCAD Civil 3D may not generate the same set of contours.
- Adding Contour Data to a Surface
Use the Add Contour Data dialog box to add contour data from polylines or splines to a surface.
- Listing and Identifying Contours
Zoom or pan to contour data and list its description and summary.
- Editing Contours
Edit any contour that you have defined by selecting it in the drawing. You can insert, move, and delete vertices, as well as redefine the elevation at a selected vertex.
- Inserting Contour Data Into a Drawing
Insert contour data into the drawing as AutoCAD polylines using the Insert to Drawing command.