Depending on the rasters used, it's possible that some mesh nodes didn't get assigned elevation values. To assign them values, follow these steps:
- Convert the grid to 2D scatter points ??(If it's not already a collection of 2D scatter points).
- Select all desired scatter points. ??Include more information on how to do this?
- Delete the selected scatter points and use the Triangles|Triangulate command.
- Select all nodes with unassigned values in the grid.
- In the Graphics Window, use the Interpolate elevation right-click command.
- Set the Scatter Set To Interpolate From to the scatter set where the unassigned scatter points have just been removed and interpolate it to this scatter set.
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