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Surface Editing Operations

Product Documentation
Intermediate
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Edit surfaces using data edit operations, which are added to a surface definition as edit operations and not to any of the existing surface data components.

You can access the data editing functionality for a surface by right-clicking Edits under a surface Definition in the Prospector tree. If a surface type does not support an edit operation, the operation is not listed. The following table lists the edits that are supported for each surface type:

Edit Operation

TIN Surface

TIN Volume Surface

Grid Surface

Grid Volume Surface
Add points

Yes

Editing operations are not supported

Yes

Editing operations are not supported
Delete points

Yes

Yes
Modify points

Yes

Yes

Move point

Yes

No

Add line

Yes

No

Delete line

Yes

Yes

Swap edge

Yes

  

No

  

Minimize flat areas

Yes

No

Smooth surface

Yes

No

Paste surface

Yes

No

Raise/Lower surface

Yes

Yes
Simplify surface Yes No

Tutorial Exercise: Editing Surface Data

Topics in this section

  • Adding TIN Lines

    Use the Prospector tree to add new TIN lines to an existing surface. This operation modifies the way that the surface is triangulated.

  • Deleting TIN or Grid Lines

    Use the Prospector tree to delete TIN or grid lines from a surface.

  • Swapping Edges

    Use edge swapping to change the direction of two triangle faces in the surface model so that, for example, the triangle edges match ridges or swales.

  • Adding Points to Surfaces

    Use the Prospector tree to add points directly to a surface model.

  • Deleting Surface Points

    Use the Prospector tree to delete points from a surface and remove inaccurate or unnecessary data.

  • Modifying Surface Points

    Use the Prospector tree to change the elevations of individual surface points.

  • Moving Surface Points

    Use the Prospector tree to move an existing surface point to a new location. The surface triangulation is updated accordingly.

  • Minimizing Flat Areas in a Surface

    When contour data is added to a TIN surface, the resulting surface can contain flat spots (triangles whose points all come from the same contour) and flat edges (triangle edges that join points from the same contour or from different contours at the same elevation).

  • Changing the Elevation of a Surface

    Change the surface elevations by adding or subtracting an amount from the existing elevation of all the surface points, which raises or lowers the surface.

  • Pasting Surfaces

    Use the Prospector tab to paste a surface into the current surface.

  • Smoothing Surfaces
  • Simplifying Surfaces

    When you simplify a surface, you reduce the number of points or triangles in a TIN surface, while preserving the surface accuracy.

  • Cropping Surfaces

    Use the Create Cropped Surface command to create a surface that is a copy of a polygonal area of a source surface.


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