Available with 3D Analyst license.
The Grade From Centerline command, found on the TIN Editing toolbar, is used to add road, levee, and berm-like features to a TIN surface. You provide the centerline of a feature, its width, and the slope angles to use for grading between the feature and the surface. The tool uses these options and synthesizes a design surface and integrates it with the TIN being edited. It optionally writes out the design surface to a new TIN model.
To enable the interactive tool a TIN must be selected for editing in the TIN Editing toolbar. Additionally, one or more 2D or 3D line graphics or features must be selected. If more than one feature is selected, then the operation will be carried out on all of the selected features using the same parameters set on the Grade From Centerline dialog.
If an input feature is 2D, it will be profiled on the TIN surface to convert it into a 3D feature before carrying out any grade analysis.
- Click the TIN Editing drop-down menu and click Start Editing TIN.
To enable the Grade From Centerline tool you must have a TIN open for editing and you need a selected line feature or graphic. The line feature can be 2D or 3D.
- Once the linear feature is selected, click the TIN Editing drop-down menu on the TIN Editing toolbar and click Grade From Centerline. The Grade From Centerline dialog window appears.
- Set the desired grading parameters from the Grade From Centerline dialog window. The following section describes each of these parameters.
- Select Apply to commit the grade parameters that have been set on the TIN selected for editing.
Smoothing Tolerance —The tolerance allowed for smoothing the input line. It's a 2D tolerance. Often, coarsely digitized lines change direction too abruptly. Smoothing fits some curvature to make direction changes more gradual. The tolerance is the distance the smoothed line can deviate from the original line. Therefore, the amount of smoothing potential is proportional to the tolerance. A value of 0.0 means no smoothing. The default is 2.25.